NCBI Bookshelf. The female sex organs make it possible for women to become pregnant and give birth to children. But they have other important jobs, too: They produce hormones, control the process of girls maturing into grown women, and make sex and sexual pleasure possible. Like men, women have external and internal sex organs.

And they may never report the incident to a doctor. Keep reading to learn more. For penis captivus to occur, a series of events during sex must take place. The penis, which fills with blood during an erection, may continue to grow in size before orgasm. The muscles inside the vagina may pulse slightly during an orgasm, too. On occasion, the vaginal muscles may contract more than typical. These contractions can narrow the vaginal opening.

Penis captivus allegedly occurs when a penis becomes stuck in a vagina during sexual intercourse. Reports of this happening are incredibly rare. Very few reports have documented the existence of penis captivus. What reports there are have led many people to question whether it really happens.

It sounds like a scene from a trashy sex comedy. But stories of getting stuck during sex have been with us for centuries - and some of them might just be true. An emergency trip to hospital is never pleasant, but it's certainly not something you would want to happen after sex. He and his co-authors found plenty of patients who had experienced problems after sex - migraines, heart problems, even amnesia.