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:220
Consent in Daily Life: How Agreement, Pressure, and Boundaries Show Up
Consent is more than a yes or no.
Different libido in a relationship: practical ways couples can deal with mismatched desire
Different libido is common in relationships and does not automatically mean low love, low attraction, or a weak bond.
Sex under trying-to-conceive pressure: how timing, expectations, and pressure can affect intimacy
When trying to conceive makes sex feel like fertile days, tests, and hope alone, it can lose its ease quickly.
Ghosting in the fertility journey: when a contact suddenly disappears
When a contact disappears during your fertility journey, it is not just disappointment.
Fertility Budget: Plan Treatment, Extra Costs, and a Practical Buffer
A fertility budget works best when diagnostics, treatment, medicines, travel, and a practical buffer are planned together.
Donor siblings and DNA tests: why families should plan early
Donor siblings are children who share a genetic link but grow up in different families.
Carrier screening before sperm donation: when genetic testing is worthwhile
Carrier screening, or carrier testing, can be worthwhile before sperm donation, but only when the question is clear.
Sexting, Nudes and Privacy: a Clear Guide to Consent, Sharing, and Digital Traces
For many people, sexting is already part of dating and relationships.
Aftercare After Sex: Why Closeness, Calm, and Real Connection Matter Most
Good sex does not end with orgasm.
How soon can you get pregnant after giving birth?
Fertility can return before the first period. This guide explains timing, breastfeeding patterns, LAM, pregnancy tests, contraception, and trying for another baby.
Contraception After Delivery: Which Methods Are Realistic and When
After delivery, the body does not return to its old rhythm right away.
Period delayed but not pregnant? Common reasons and when to get checked
When a period is delayed, pregnancy is the first thing many people think about.
Can you get pregnant if you use the washroom right after sex?
Short answer: no.
Can stress postpone ovulation?
Stress is not a simple switch, but it can measurably delay a cycle or make it less predictable.
Can someone get pregnant without penetration?
Yes, but only if fresh sperm or semen-containing fluid actually reaches the vulva or the vagina.
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 assessment.
Spotting before your period: what it can mean and when to see a doctor
Spotting before your period usually means only a small amount of blood, but the reasons can vary.
Fertility, Probability, and Hope While Trying to Conceive: What Your Chances Really Mean
When people talk about fertility, probability, and hope while trying to conceive, three different layers often get compressed into one sentence.
Spacing between pregnancies after childbirth: why the gap matters medically
The gap between pregnancies is not just a planning question.
Pubic Hair Removal and Pubic Hair: What the Evidence Says About Satisfaction, Body Image, and Risk
Pubic hair removal is common and is often linked with cleanliness, attractiveness, or partner preference.
Low Sexual Desire and Alexithymia: Is There a Connection?
Alexithymia mainly describes difficulty recognizing feelings, putting them into words, and distinguishing them from bodily signals.
Vaginal depth during arousal: what changes and what does not
Yes, sexual arousal does change the vagina functionally.