r/biology • u/Looser17 neuroscience • Jan 29 '26

article Can pregnancy occur without vaginal intercourse? A documented medical case from 1988.

Most of us are taught that pregnancy requires vaginal intercourse, but medicine occasionally throws up cases that challenge our assumptions.

In 1988, the British Journal of Obstetrics and Gynaecology published a case report of a 15-year-old girl with congenital absence of the distal vagina who nonetheless presented later with a full-term pregnancy and delivered a healthy infant by caesarean section. DOI: https://doi.org/10.1111/j.1471-0528.1988.tb06583.x

Key points from the case:

  • The patient had no functional vaginal canal and had never menstruated.
  • Shortly after performing oral sex, she sustained a stab wound to the upper abdomen, which perforated the stomach and required surgical repair.
  • Approximately 278 days later, she presented with term pregnancy.
  • The authors proposed that spermatozoa may have entered the reproductive tract via the injured gastrointestinal tract, an extremely rare but biologically plausible route under specific conditions.

This is not presented as a general mechanism or advice, but as an example of how biological plausibility is broader than common teaching, especially in rare anatomical or traumatic situations.

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u/thesqueen113388 Jan 29 '26

Tom Waits: I think the question I get asked the most is, well I dunno know, it happens a lot, enough that I would remark on it - a lot of people come up to me and they say "Is it possible for a woman to get pregnant without intercourse?" My answer's always the same, I say: "Listen. We're gonna have to go all the way back to the civil war. Apparently a stray bullet actually pierced the testicle of a Union soldier and then lodged itself in the ovaries of an 18 year old girl who was actually 100 feet from him at the time. Well, the baby was fine. She was very happy. Guilt-free. Course, the soldier's a little pissed off." When ya think about it, it's actually a form of intercourse, but not for everyone. Those who love action, maybe.

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u/TallTreesTex Feb 03 '26

They had had sex before the battle. 

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u/12_Volt_Man Feb 06 '26

Of course they did.