Bloody mysterious

One of the more persistent questions I get asked about vaginas has to do with bleeding after sex. Sudden, painless, non-menstrual bleeding after familiar sexual activities can seem entirely mysterious, but it is a fairly well-documented phenomenon among gynecologists.

My intuition always wanted to suggest unfelt injuries as the source of blood— the upper vagina isn't very sensitive, and many sex injuries don't hurt at the time because arousal increases a person's pain threshold. Wounds could go unnoticed. However, the cause is apparently usually one level more insidious. Yes, there are unfelt wounds, but what causes those during everyday sex?

The thrilling (?) conclusion… find out in Post-Coital Bleeding.

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