Philipp Marx
Founder of RattleStork
Philipp Marx is a founder of RattleStork and a former international sperm donor. He writes from first-hand experience about sperm donation, co-parenting, and alternative paths to parenthood.
Before founding RattleStork, Philipp donated sperm in several countries. That experience showed him how differently people approach donor conception, trust, personal boundaries, and co-parenting.
At RattleStork, he combines that perspective with publicly available sources and practical guidance for donors, recipients, and prospective co-parents. His personal experience is not a substitute for medical or legal advice.
Articles by this author
Total published articles:191
Home insemination in the U.S.: timing, safety, and legal basics
A practical guide to home insemination, from ovulation timing and fresh sperm handling to safety and U.S. legal basics.
How long does sperm live? Real timelines in the mouth and saliva, in air, on skin, in water, and in a condom
Most people are not asking a biology question, they are trying to judge a specific situation: sperm in the mouth, semen drying on skin, a condom, water, or a cup.
Pregnant from pre-ejaculate? Risk without ejaculation, facts about fertile days, and protection
Starting question: can you get pregnant from pre-ejaculatory fluid alone, without ejaculation inside the vagina?
Blue balls: symptoms, duration and relief
Blue balls and testicular congestion: what the discomfort feels like, how long it lasts, what may help, and when testicular pain needs urgent care.
Egg Donation in the United States: Process, Costs, Success Rates, Risks, and State Law
Egg donation can be the most realistic path to pregnancy for some people, but in the United States it is never just a medical decision.
Co-Parenting in the US: Definition, Common Setups, Day-to-Day Life, Communication, and Planning
In the US, co-parenting means sharing parenthood intentionally, without a romantic relationship being required.
Semen analysis: process, preparation, understanding results, and next steps
A semen analysis is the standardized lab assessment of a semen sample and is often the first test when male fertility issues are suspected.
Preimplantation Genetic Testing 2025 - Process, Costs and Legal Landscape in the United States
Preimplantation genetic testing (PGT) lets embryos created through IVF or ICSI be tested for specific genetic conditions before transfer to the uterus.
COVID‑19 vaccination and male fertility: Can it make you infertile?
What research and semen analyses tell us about COVID‑19 vaccination, male fertility, and unvaccinated donor sperm.
In vitro fertilization: IVF process, timeline, success rates, and costs explained clearly
In vitro fertilization, often called IVF, is a medically supervised fertility treatment with clear steps but many decisions: protocol choice, timing, transfer strategy, safety planning, and budget.
Intracytoplasmic Sperm Injection: ICSI Steps, Who It Helps, Success Factors, Risks, and Costs Explained Clearly
Intracytoplasmic sperm injection, often called ICSI, is a specialized form of in vitro fertilization developed primarily to overcome significant male factor infertility.
Intrauterine Insemination: IUI Steps, Success Rates, Timing, Risks, and Costs Explained Clearly
Intrauterine insemination, or IUI, is a well-established fertility treatment.Intracervical insemination: ICI process, timing, chances of success, safety, costs and differentiation from IUI, IVF and ICSI
Intracervical insemination, or ICI, is a form of artificial insemination in which a semen sample is placed close to the cervix and fertilization still takes place inside the body.
Assisted reproduction in the United States 2025: methods, success rates & costs
“Assisted reproduction” isn’t a single procedure but a toolkit.
Linea nigra in pregnancy – causes, care, facts
Linea nigra is a darker line down the middle of the belly that often shows up during pregnancy.
Implantation: When it happens, how long it takes, and what symptoms are realistic
Implantation is one of the most searched topics during the wait after ovulation.
Luteal phase deficiency: causes, symptoms, and evidence-based treatment
Luteal phase deficiency means progesterone is too low or too short-acting in the second half of the menstrual cycle; it is often discussed as luteal insufficiency.
Understanding cervical mucus: spotting fertile days and reading warning signs
Cervical mucus changes across the menstrual cycle.
Ovulation explained: finding your fertile days, signs, and tests
Your chance of pregnancy clusters into just a few days per cycle.
LH surge and ovulation tests: identify fertile days reliably
The LH surge is an important timing signal around ovulation and helps you plan fertile days more realistically.
Breast growth and breast pain in pregnancy: causes, tips, and FAQs
If your breasts feel tight, tingly, or tender to the touch during pregnancy, that is often part of normal changes.
Understanding surrogacy: the process, parenthood, costs, and risks
How surrogacy works, the roles of everyone involved, and what needs to be clarified about parenthood, costs, and risks.
STDs and sperm donation: screening, testing, and genetic risks explained simply
Donor screening is mainly about reducing the risk of STDs and other infections, and lowering certain genetic risks before treatment.
Vasectomy reversal: procedure, success chances, costs and alternatives
A vasectomy reversal is microsurgery that reconnects the vas deferens after a vasectomy.
Tubal reversal after sterilization: success rates, procedure, and alternatives
Tubal reversal is surgery that aims to make the fallopian tubes open again after sterilization so that pregnancy can be possible again.
Polycystic ovary syndrome (PCOS): symptoms, diagnosis, treatment, and trying to conceive
PCOS is a common hormonal and metabolic pattern that can affect your cycle, skin, weight, and fertility.
Chlamydia in 2025 - Impact on Fertility, Symptoms & Effective Prevention
Chlamydia is the most common curable sexually transmitted infection (STI) .
Fertility & Religion 2025: How faith traditions view sperm donation, egg donation, IVF/IUI, and surrogacy
This overview explains how major faith traditions today approach sperm donation -with attention to origin, lineage, openness versus anonymity, family roles, and identity rights.
Worldwide birth rate decline: fertility crisis, reasons, and solutions
A declining birth rate means that the average number of children per woman (the total fertility rate) has been falling for decades in many countries.
The biological clock and having children
What changes at 30, 35, and 40, what fertility tests can tell you, and how to think through having children without unnecessary pressure.
Stopping the pill: how to plan the transition safely and without panic
If you want to stop the pill, a clear plan helps more than extreme advice.
Female infertility: causes, evaluation, and treatment explained clearly
When pregnancy does not happen despite trying to conceive, a clear plan helps more than guesswork.
Male infertility: causes, evaluation and modern treatment options
Unfulfilled desire to have children is one of the most stressful phases for many couples - and yet the perception persists that the problem “usually lies with the woman.
Delaying menopause: evidence-based strategies for diet and lifestyle
Many people wonder whether you can delay menopause and what really affects the timing.
Get pregnant fast: What actually helps and when medical advice makes sense
If you want to get pregnant fast, timing matters much more than internet myths.
Preterm birth: causes, warning signs, and treatment
A preterm birth is a birth before 37 completed weeks of pregnancy.
Miscarriage: signs, diagnosis, and next steps
Understanding early and missed miscarriage: what symptoms can and cannot tell you, careful diagnosis, treatment, follow-up, and support after a loss.
Male fertility with age
How age, stress, and lifestyle affect sperm—and what that means for having children later in life, fertility testing, and applying to become a sperm donor.
Pavel Durov: sperm donations and his inheritance promise
More than 100 children, according to Durov: how he made his sperm donations, an IVF offer, and inheritance plans public—and what remains unclear.
How do I tell my child they were conceived via sperm donation?
Sperm donation means using sperm from a donor to make a pregnancy possible.
The History of Sperm Donation - From Secret Experiments to the DNA-Test Era
Sperm donation is now routine for single mothers, LGBTQ+ couples, and heterosexual couples facing male infertility.
At-Home DNA Kits 2025 - Your Compass for Genes, Rules & Privacy
A home DNA kit now costs little more than a movie ticket yet answers questions such as Where do my ancestors come from?
Sperm Donation in Islam 2025: Nasab, Marriage, Donor Anonymity, Legal Schools & Country Practice
Whether sperm donation is permissible in Islam is evaluated differently across legal schools and countries.
Sperm Donation & Family-Building in Christianity 2025: Teachings, Tensions, and Practice in Catholic, Orthodox, Protestant Traditions, and Free Churches
Christian churches share the conviction that human life has dignity and that marriage and family deserve protection.
Transporting semen at home: pack the sample safely, keep it close to your body, and deliver it on time
If a semen sample is collected at home, three things matter most: a sterile cup, a short direct trip, and protection from temperature extremes.
Ovulation Trackers Compared: LH Tests, Temperature Trackers, Rings, and Apps
Ovulation trackers are tools that narrow down fertile days using hormones, temperature, or observable body signals.
HIV self-test: how reliable home test kits are, when they work, and what a negative result really means
An HIV self-test can give you clarity fast, but only if you use it at the right point and read the result in context.
Which one of us should get pregnant? How lesbian couples can decide fairly and medically wisely
The question of who should carry the pregnancy usually cannot be answered on emotion alone.
Reciprocal IVF: Process, role choices, odds, and legal questions in the United States
In reciprocal IVF, one partner provides the eggs and the other becomes pregnant.
Home insemination kits: contents, benefits, risks - what really helps
Home insemination kits are sets for at-home use: a needle-free syringe places the sample near the cervix.
Ovarian stimulation: how it works, the medications, the risks, and what really matters in IUI, IVF, and ICSI
Ovarian stimulation does not automatically mean producing lots of eggs.
Natural Insemination: Does It Really Improve Your Odds?
Natural insemination means trying to conceive through unprotected sex with a donor.
Questions to ask your sperm donor
24 questions about health, motivation, previous donations, and contact, with practical ways to assess the answers.
How do I ask someone to be my sperm donor?
Asking someone to be a possible sperm donor is emotional, sensitive, and often full of uncertainty.
Social freezing: freezing your eggs – process, success rates, risks, costs, and alternatives
Social freezing means freezing your eggs earlier in life so they may be used later in fertility treatment.
Dating as a single parent: clear start, safe boundaries, steady progress
Dating can work without overwhelming your everyday routine.
Semen: structure, volume, and quality
Semen explained: its composition, sperm production and fertilization, normal variations, and warning signs. With medical context for semen analysis results and supplements.
Supplements When Trying to Conceive: An Honest Guide to Folic Acid, Iodine, Vitamin D, CoQ10, and Inositol
If you search for fertility vitamins, you quickly land on product pages full of long ingredient lists and big promises.
Private sperm donation: Which health checks are advisable and what should you insist on?
Health screenings can reduce the risk of infections and unexpected medical problems. They cannot eliminate the risk completely. This is not a pessimistic view but the essence of diagnostics: tests have limitations, and something can change between the time of testing and the donation.
Could my child develop mental illness if I have mental health problems?
Many people with depression, anxiety, ADHD, trauma, or severe mental illness know the thought: What if I pass this on to my child?
Stress and trying to conceive: How mental health and your cycle are connected
How stress may affect ovulation and periods, the role of mental health conditions and medications, and when to seek support.
Testicular torsion: symptoms, time window, and what to do immediately
In a testicular torsion, the testicle twists around the spermatic cord. Blood vessels and the vas deferens run through this cord. If the blood supply is cut off, the testicular tissue can be damaged within a few hours.
Undescended testicle in children: causes, diagnostics, treatment, and why timing matters
An undescended testicle means one or both testicles are not permanently located in the scrotum.
Is there an age limit for fertility treatments?
There is no single age cutoff that applies everywhere.
Loneliness during pregnancy: why it happens and what can really help
Loneliness during pregnancy can feel wrong, especially because people on the outside often expect happiness, excitement, and connection.
Penis Size: The Average, Normal Range, and Country Myths
Reliable measurement data shows both an average and a wide normal range. It also explains why many men feel too small and why country rankings claim more than the evidence supports.
Do Women Prefer Large Penises? What the Studies Actually Show
Studies do not reveal one ideal size. Moderate tendencies exist, but preference, perception, and sexual satisfaction are different questions.
Longer or thicker penis: What actually matters during sex?
Small surveys mention girth somewhat more often than length. In practice, arousal, comfort, and how two bodies fit together matter more.
Micropenis: Definition, Measurement, Causes, and What Actually Helps
Diagnosis is based on stretched penile length, age-specific reference values, and the complete clinical picture. Treatment options depend strongly on age and cause.
How to Measure Your Penis: Length, Girth, and Stretched Penile Length
A clear guide to erect length and girth, plus the important difference between those measurements and stretched penile length in a clinical examination.
Latex-free or latex: burning after condom use, what is harmless and what is a warning sign?
Burning or itching after condom use is common.
Condom broke or slipped off: what actually matters now
A condom that tears or slips off is a contraception failure and can mean pregnancy risk and a risk of sexually transmitted infections.
Erectile dysfunction and erection firmness
Erection firmness, possible causes, and effective treatments: how to understand changes and prepare for a medical assessment.
Sex during pregnancy: safe, flexible, and without pressure
Sex during pregnancy is possible in most uncomplicated pregnancies.
Taste of Semen
Why semen can taste bitter or salty, whether you can improve the taste, and what to know about pineapple, diet, and swallowing.
Curious questions about semen: color, smell, and myths fact-checked
Why does semen smell different, can you run out, and does it glow under black light? Curious questions and myths, fact-checked.
Coming too early: What really helps with premature ejaculation and when evaluation makes sense
Premature ejaculation is common, but that does not make it easy to talk about.
Coitus interruptus: Safety, risks, and what the data really show
Coitus interruptus means the penis is withdrawn from the vagina shortly before ejaculation so that ejaculation occurs outside. Colloquially this is called the withdrawal method or the "pull-out." The goal is to keep sperm away from the vaginal area.
Is Homosexuality Inherited? If the Father Is Gay: What Research Shows About Children of Same-Sex Parents
A gay father or lesbian mothers do not automatically make a child gay or lesbian.
Condom sizes: Which one fits, how to measure, and whether sizes are the same worldwide
A condom should fit securely without constricting. If it’s too loose, there’s a greater risk of slipping or coming off. If it’s too tight, it often causes pressure, reduced sensation, and increased friction, which puts more strain on the material. Many failures may appear to be a quality issue, but in practice they are often a combination of fit, friction, and minor user errors.
At-home sperm tests: how useful are they really?
At-home sperm tests do exist.
Paternity Test: Process, Accuracy, Consent, and Important Differences by Country
A paternity test can answer important questions, but it is never just a simple DNA comparison.
Understanding porn addiction: When porn and masturbation become a problem
Is very frequent porn use already an addiction? Control and consequences matter most—including effects on relationships, erections, sperm, and trying to conceive.
Immunology in pregnancy: what is actually proven
Online it often sounds as if the immune system inherently rejects a pregnancy and only needs to be calmed down. Medically, it is more complex: pregnancy succeeds not despite but with a finely tuned immune system. This article explains what is well supported by evidence, where diagnostics have limits, and why many immune treatments in fertility care are viewed critically.
Blood in the urine: causes, warning signs, and what to do next
Seeing blood in the urine is immediately worrying, and that reaction is understandable.Blood in semen: causes, warning signs, and what to do now
Blood in semen can look more alarming than it is medically speaking.
Pain after sex: common causes, warning signs, and what to do next
Pain after sex is not automatically an emergency, but it is also not something you should keep pushing aside.
Unexplained infertility: What unexplained infertility means and what happens after the basic workup
Unexplained infertility does not mean there is no problem.
Azoospermia: When no sperm are detectable in semen
Azoospermia means that no sperm are detectable in the ejaculate.
Ectopic pregnancy: Causes, symptoms, and what really matters clinically
In an ectopic pregnancy, the fertilized egg does not implant in the uterus but most often implants in a fallopian tube. Medically, it is classified as an extrauterine pregnancy — that is, a pregnancy outside the uterus.
Superfetation: Can you get pregnant again during an ongoing pregnancy?
Superfetation means that after a pregnancy has already started, another ovulation, fertilization, and implantation would happen.
Twins, Triplets, and Multiples: Real Odds, Risks, Care, and Better Decisions
A multiple pregnancy is not some exotic edge case, but it is also not just a regular singleton pregnancy with extra babies.
Understanding superfecundation: How fraternal twins can start in the same cycle
Superfecundation sounds dramatic, but biologically it is mostly a timing issue within the same menstrual cycle.
PrEP for HIV: effectiveness, dosing, side effects, testing, and cost
PrEP can lower HIV risk very substantially when dosing, testing, and medical follow-up fit together.
Biochemical pregnancy: early positive test, early bleeding, and what actually matters now
An early positive pregnancy test followed by bleeding or a negative retest can trigger hope, confusion, and panic all at once.
Antibiotics and pregnancy risk: what is actually proven and what remains myth
Many people take an antibiotic around the time they are trying to conceive or in early pregnancy and immediately worry about implantation problems, miscarriage, or harm to the baby.
Are my breasts still growing? What is normal in puberty and when to get checked
Breast development often starts earlier than expected, happens unevenly, and does not finish at the same time for everyone.
Are my labia normal? What variety, asymmetry and symptoms mean
Labia do not all look the same.
How does masturbation really work? Body knowledge, comfort, and honest answers without shame
For many people, masturbation is a normal part of sexuality, yet very few topics carry this much uncertainty, comparison, and outdated myth.
How does sex work? A clear guide to consent, what to expect, and protection
Sex is a shared process where consent, clear communication, a comfortable pace, and protection from pregnancy and infections matter most.
Sex positions and getting pregnant
Sex positions and conception: how plausible the theories about gravity and penetration depth are, what studies show, and what matters in practice.
How Long Does Sex Last? Average Times, Studies, and Why Minutes Are Rarely the Main Answer
A lot of people want to know how long sex lasts on average.
How often do people have sex? Average, age, relationships, and the key numbers
Many people want to know how often people actually have sex.How many sexual partners does a person have in their lifetime? Real numbers, country comparisons, and context
This article is deliberately about concrete numbers, not vague internet claims. In the data used here, Germany comes out at roughly 3 to 4 lifetime partners at the median, and in the US the figure is closer to 4 to 5, while Great Britain sits at 4 to 6 and France stands out with noticeably higher averages. On top of that, there are clear figures for the last year, for the upper end of the distribution, and for the reason average and median often tell completely different stories.
Vaginal discharge explained: what is normal, what stands out, and when to get checked
Vaginal discharge is not automatically a problem.
Do I have a sexually transmitted infection? Calm assessment after sex, one-night stands, and unprotected encounters
After intimacy, many people initially feel uncertain. The body can feel different — you may suddenly notice every twinge, every moisture, every smell. That's normal.
How do I reach orgasm? What actually helps, what creates pressure, and when it makes sense to get help
A lot of people look for one trick that will finally make orgasm happen.Am I gay, lesbian, or bi? Understanding orientation without pressure or rushed labels
The question Am I gay, lesbian, or bi often hits hardest when feelings, fantasies, and closeness no longer fit neatly into your old self-image.
Heartbreak: Why breakup pain can hit so hard and what actually helps
Heartbreak can take over your whole day: the first thought when you wake up, tension in your chest in the afternoon, and overthinking again at night instead of sleep.
Am I pregnant? A calm reality check on symptoms, timing, and tests
For many people, “Am I pregnant?” is not only a medical question but also an emotional one: I need certainty now. That’s exactly why simple symptom lists work so poorly. They rarely provide clarity and often intensify worry.
Puberty timing: Too early or too late? What’s still normal and when to seek help
Puberty is visible. Voice, body shape, breast development, facial hair, acne, body odor, body hair, growth spurts, and mood change. Because it seems to start earlier or later in others, it's easy to quickly feel like something is wrong with you.
Breastfeeding in the first week: getting started, colostrum, milk coming in, cluster feeding and common problems
The first breastfeeding week is often more intense than expected: little sleep, a baby who wants to feed very frequently, and a body that is adjusting at the same time.
Postpartum and the time after birth: physical changes, healing, and warning signs
After birth, body and routine are both readjusting.
C-Section: Preparation, Procedure, Recovery, and Warning Signs
A C-section is a birth by surgery.
Birth injuries: perineal tears, stitches, healing, and warning signs
Perineal tears, stitches, and other birth injuries usually heal well. This guide helps you understand your recovery and recognize warning signs in time.
Afterpains after birth: why they happen and when it's too much
Afterpains are cramp-like lower abdominal pains in the postpartum period caused by the uterus contracting and returning to its pre-pregnancy size after birth.
Lochia: what is normal, how it smells, how much bleeding is okay, and when to get checked
Lochia is part of normal healing after birth.
Sick During Pregnancy: Colds, Fever, Medications, and When to See a Doctor
Having a cold, running a fever, or getting flattened by a stomach bug during pregnancy can feel much worse than usual because circulation, sleep, breathing, and hydration are under more strain.
Caffeine in Pregnancy: How Much Coffee Is Safe and What Changes While Breastfeeding
Coffee in pregnancy is not just a yes-or-no issue.
Blocked milk duct: causes, quick relief, and when to get it checked
A blocked milk duct can show up as sudden pressure, pain, and a hard lump in the breast, often right when you want to breastfeed or pump.Mastitis while breastfeeding: symptoms, treatment, antibiotics, and when to get medical help
Mastitis is more than a painful clogged duct.
First period: what is normal, what makes the start easier, and when to get checked
The first period is called menarche.
Pelvic floor after childbirth: symptoms, recovery, and when physical therapy is helpful
After childbirth the body often feels different than expected.
Diastasis recti after pregnancy: what is normal, what helps, and when to get help
Diastasis recti is common after pregnancy and birth.
Baby Blues or Postpartum Depression: Differences, Warning Signs, and What Helps Now
After childbirth, strong feelings are common and do not automatically mean something is wrong.
Postpartum hemorrhoids: what really helps and when to get help
Postpartum hemorrhoids are common and can become painful and irritating in the weeks after birth, especially when sitting and during bowel movements.
Thyroid and trying to conceive: TSH, symptoms, and sensible testing
Unclear thyroid labs are common when you are trying to conceive and should be interpreted carefully.
Sex after childbirth: when it can feel good again, why it hurts, and what helps
Sex after childbirth rarely has a fixed restart date.
Stretch marks after pregnancy: causes, what to expect, and what actually helps
Stretch marks are changes in the middle layer of the skin and are very common after pregnancy, but for many they still feel personal.
High blood pressure after birth: warning signs, blood pressure values, and when to get help right away
High blood pressure can also start after birth or worsen during the postpartum period.
Understanding Vaginismus: Causes, Symptoms and What Can Actually Help
Vaginismus is an involuntary protective response in which muscles around the vaginal opening or pelvic floor tighten when penetration is expected or attempted.
UTI after sex: why it happens and what actually helps
Burning when you pee, urinary urgency, or pressure over the bladder shortly after sex often point to a UTI after sex.
Breastfeed or not: medical differences, safe alternatives, and a realistic decision without pressure
Breastfeeding has medical benefits, but it is not the only way to feed a baby well.
Erection problems when trying to conceive
When erection problems affect your plans for a baby: ease pressure together, seek help early, and understand your options for conception.
Nominal condom width: what it means, how to convert it, and how to find the right size without a calculator
The nominal width is a millimeter measurement that describes the width of a condom in its flat, unrolled state. It is not a body width, not a diameter, and not a secret lab number; rather, it is a packaging specification that makes it much easier to compare products than labels like Standard, Regular, Large, or XL.
Blowjob: Oral sex without pressure – consent, hygiene, protection
A blowjob is oral sex on a penis, and it is only good when everyone involved feels safe and respected.
Cunnilingus: Oral Sex on Women Explained Clearly and Realistically
Cunnilingus, often just called going down on someone, means oral sex on the vulva.
Foreplay: ideas, communication, desire, and safety without performance pressure
Foreplay is not just a quick lead-in before penetration.
Petting: Intimacy without sex, understanding risks and setting boundaries
Petting can create intimacy without penetration, but it often raises the same questions: what counts, where are the boundaries, when does pregnancy risk become real, and which sexually transmitted infections can still spread?
STIs from Blowjobs: What the Real Risk Is and How to Protect Yourself
You can get a sexually transmitted infection from a blowjob.
Can You Get Sick from Oral Sex? Cunnilingus and STIs, Explained Realistically
A lot of people search for getting sick from oral sex or STIs from cunnilingus and want a simple yes-or-no answer.Starting the birth control pill: how to choose a formulation and begin safely
The birth control pill is hormonal contraception that can prevent pregnancy very reliably when taken correctly.Morning after pill: what matters now, how it works, and when to test
The morning after pill is emergency contraception after unprotected sex or a birth control accident.
How many eggs does a woman have? Ovarian reserve, ovulation, and age explained simply
Women are born with a finite ovarian reserve that declines over the course of life.
Hymen: what it really is and why it proves nothing
Many people look for information about the hymen, also called the vaginal corona, and wonder whether you can tell virginity from it or whether it always tears and bleeds the first time you have sex.
Co-Parenting Across U.S. State Lines: What Actually Changes and How to Keep It Workable
Living in different states does not automatically make co-parenting fail, but it does raise the stakes. Parentage, decision-making, travel, money, and relocation all need clearer rules when a plan has to work across state lines. Florida, Illinois, Kentucky, Minnesota, Arizona, and Washington are good examples of how differently the rules can look once a plan has to cross a state border. This guide focuses on the pressure points that usually break a weak agreement and the defaults that make a long-distance plan easier to live with.
PEP after a possible HIV exposure: What you need to know in the first 72 hours
PEP is an emergency medical step after a possible HIV exposure.
How to use a condom correctly: a step-by-step guide
A condom works best when you put it on before the first contact, leave room at the tip, roll it all the way down, and remove it carefully afterward. The steps are simple, but the small details decide safety, comfort, and whether it stays in place.
Dysorgasmia: When orgasm hurts or feels blocked
Dysorgasmia is uncommon, but distressing for the people who experience it. It refers to pain during or right after orgasm, or to an orgasm that feels blocked, foreign, or somehow off. This article breaks down the common patterns, explains possible causes, and shows when evaluation and treatment make sense.
In-vitro gametogenesis: what IVG can do, where it still falls short, and why it has not changed fertility care yet
In-vitro gametogenesis, or IVG, is the research effort to create eggs or sperm from stem cells in the lab. It sounds like a major answer for people facing severe infertility, but today it is still a research field with serious safety, quality, and ethics questions.
Vasectomy: procedure, how it works, risks, and follow-up
A vasectomy is a small surgical procedure for permanent birth control.
HIV: What you should know about transmission, symptoms, testing, and treatment
This guide explains HIV clearly and without alarm: what the virus is, how it spreads, which symptoms can appear, how tests should be interpreted, and why modern treatment changes so much.
HIV in Everyday Life: What Really Matters After a Diagnosis in the US
This article is for people living with HIV after diagnosis in the US and looks at what really matters in daily life, relationships, work, travel, and self-image.
Male contraception: condoms, vasectomy and hormonal options compared
For now, male contraception is mostly condoms or vasectomy.
Endometriosis and Fertility: When It Affects Conception and What Helps
Endometriosis can make conception harder, but it does not automatically mean infertility.Understanding the AMH level: what does it really say about fertility and trying to get pregnant?
AMH is a useful part of understanding egg reserve and planning when you are trying to get pregnant.Checking Fallopian Tube Patency: HSG, HyCoSy, what happens, pain, and what the test can tell you
When pregnancy is not happening, checking the fallopian tubes is often a sensible next step.The Two-Week Wait: Symptoms, Progesterone, Test Timing, and What Not to Read Into
The two-week wait is the stretch between ovulation and the point when a pregnancy test actually makes sense.
Letrozole when trying to conceive: how it works, how it is taken, side effects, and when it is used
Letrozole is often used in fertility care when ovulation does not happen regularly or needs a targeted push.Clomiphene or Letrozole: What Is the Difference in Cycle Treatment and Ovulation Induction?
Clomiphene and letrozole are both used when a cycle needs support or ovulation needs to be triggered on purpose.
Embryo Transfer During IVF and ICSI: Procedure, Timing, Aftercare, and Realistic Expectations
Embryo transfer is the last visible step in IVF or ICSI treatment, but the part that really matters is preparation, timing, and the calmer period afterward.Embryonic development days 1 to 5: what morula and blastocyst really mean
The first five days after fertilization often sound like lab shorthand in fertility treatment.
Sharing your donor conception story
Examples for conversations with family, friends, daycare, and people you meet: find words for your family’s story and choose what stays private.
Why are testicles so sensitive? Causes, warning signs, and what helps now
Testicles often react more strongly to touch, pressure, and pulling than many people expect because their position, nerve supply, and free suspension make them especially sensitive.
Vulva and vagina: the difference explained simply
Vulva and vagina are often mixed up in everyday language, even though they are not the same thing.
Is phimosis serious? When it is normal, when you should act, and what actually helps in U.S. healthcare
Phimosis is not automatically a problem.
When the plan falls apart: How to regroup after a fertility, donor, or co-parenting break
When a fertility, donor, or co-parenting plan falls apart, it helps to name the break clearly, sort the options realistically, handle the conversations without losing your footing, and move to the next concrete step.
Ghosting while trying to conceive: when a contact suddenly disappears
If a contact drops off while you're trying to conceive, it is not just disappointment.
Donor siblings and DNA tests: what families should think about early
Donor siblings are genetically related children who grow up in different families.
Carrier screening before sperm donation: when genetic testing makes sense
Carrier screening, or carrier testing, can be useful before sperm donation, but only when the question is clear.Sexting, Nudes, and Privacy: the Practical Guide to Consent, Sharing, and Digital Traces
For many people, sexting is already part of dating, relationships, and casual intimacy.
Pregnant again after giving birth: fertility and pregnancy spacing
How soon another pregnancy is possible, what spacing may make sense, and how breastfeeding, cesarean birth, birth control, and pregnancy tests affect your decisions.
Birth Control in the Postpartum Period: Which Methods Are Realistic and When
Your body does not return to its old rhythm immediately after birth.
Missed period but not pregnant? The most common reasons and when to get checked
When a period does not show up, pregnancy is the first thing many people think about.
Pregnant without penetration? Petting and anal sex explained
Petting, anal sex, fingers, or semen on the skin: learn which contact can cause pregnancy and when emergency contraception or a test can help.
Pregnant after what seemed like a period? Understanding bleeding during pregnancy
You cannot have a true period during pregnancy, but you can bleed. What matters is the pattern, accompanying symptoms, and medical evaluation.
Spotting before your period: causes, implantation, hormones and warning signs
Spotting before your period usually means only a small amount of blood, but the causes can be very different.
Fertility, Probability, and Hope in Trying to Conceive: What Your Chances Really Mean
When people talk about fertility, probability, and hope in trying to conceive, three different layers often get compressed into one sentence.
Pubic Hair Removal and Pubic Hair: Sexual Satisfaction, Body Image, and Real Risks
Pubic hair removal is common and is often tied to cleanliness, attractiveness, or partner preferences.
How deep is the vagina?
How a longer penis can fit, what arousal changes, and why sex may feel too tight, too loose, or too deep.
Does a Large Penis Make Pregnancy Happen Faster? Size, Sex, and Fertility
Normal differences in length and girth do not make pregnancy more likely. Sperm, timing, ovulation, and functional ejaculation are what matter.
Sperm donation in the U.S.: process, costs, and laws
A practical U.S. guide to choosing donor sperm, comparing bank and known-donor routes, understanding screening and state law, budgeting the full process, and protecting your future family.
Sperm donation in the Philippines: private donors and clinic access
Private sperm donation in the Philippines: LGBTQ+ access, sperm banks, legal parenthood, costs, screening, and planning with a known donor.
Your first time having sex: preparation, positions, pain, bleeding, and protection
A comprehensive guide to having sex for the first time: readiness, consent, preparation, positions, pain, bleeding, protection, and warning signs.
DNA fragmentation and the DFI test
DNA fragmentation despite a good semen analysis: what the DFI value means, when testing may help, and how age, sperm donation and egg cells fit in.
Sperm donation in Germany
Sperm donation in Germany: costs, the donor register, private donation, and paternity. What the voluntary limit of 15 families actually means.
Sperm cramps: How an internet meme becomes a health question
From a TikTok joke to a health question: where the sperm cramps meme comes from, how AI might contribute, and why the term is not a diagnosis.
Alcohol, nicotine, and cannabis: from conception planning to breastfeeding
What alcohol, nicotine, cannabis, and anabolic steroids mean for sperm, pregnancy, and breastfeeding: risks, research, tests, and practical help with quitting.
Sperm donation: surprising exclusions worldwide
Dengue vaccination, tropical travel, or genetic testing: which diseases and unusual circumstances affect sperm donation worldwide, why exclusions exist, and what has changed.