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 Everyday Life: How Consent, Pressure, and Boundaries Actually Work
Consent is more than a yes or no.
Different libido in a relationship: what couples can actually do about mismatched desire
Different libido is common in relationships and by itself says nothing about love, attraction, or the value of the relationship.
Sex under trying-to-conceive pressure: How timing, expectations, and goal-driven mode wear down intimacy
When sex in the trying-to-conceive process becomes nothing but fertile days, tests, and hope, it loses lightness fast.
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.
Fertility Budget: Treatment, Extra Costs, and a Realistic Buffer
A fertility budget only works when diagnostics, treatment, medication, travel, and a real buffer are planned together.
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.
Aftercare after Sex: How Closeness, Calm, and Real Connection Make the Difference
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, birth control, and trying for another baby.
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.
Can you get pregnant if you pee right after sex?
Short answer: no.
Can stress delay ovulation?
Stress is not a simple switch, but it can measurably delay a cycle or make it less predictable.
Can you 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 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.
Birth spacing after delivery: why the gap matters medically
The gap between two pregnancies is not just a family planning question.
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.
Low Sexual Desire and Alexithymia: Is There a Link?
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 changes the vagina functionally.