My boy friend and I have been having sex for awhile, but this last time it really hurt after we where done. We started kind of fast and rough. We keep changing positions. He did com in side of me. But I don't know if that has to do with anything. I don't know if we stared to fast or went to rough or if I'm allergic to him.

You probably were not lubricated enough naturally. Next time have some ky jelly on hand if he is too anxious,