Is diarrhea somehow normal after ?

I have had 3 tiimes within the last 3 weeks and after all 3 times I have had diarrhea. After the first time it was really bad because my stomach would be growling for days nonstop and my in stomach i would have pain and diarrhea...I dnt think we use a condom and we didnt use a lubricant or anythin..and i dont even have an apetite for food that much but sometimes i get grossed out and then other times i am really hungry but then get grossed out...these are the changes that i have noticed and i was wondering is this normal and why i fell this way??does any have advice on why this is or should i see the doc r somethin?/Thanks a lot!!!