My boyfriend vomits after meals. He rarely complains of nausea, but sometimes (maybe 2-3 times a week) he says his stomach hurts and then throws up.

He does not usually say he is pain, though. There don't seem to be any other stomach-related symptoms, but we have noticed that his penis sometimes smells foul (even after showering/cleaning the area). He has also stopped all sexual activity for about a week and a half but symptoms persist.