stomach pain occurs after sex in both men and women who get semen inside them, sperm is an irritant for the uterus and the anus so that is the reason the person who gets penetrated will always have stomaches after sex if the penetrator comes inside them reply
Pfft... Well~ Semen isn't supposed to be there in the first place, so his body is probably rejecting the foreign substance.
... But that's just my guess. reply
