Stinging/uneasy pain?

I haven't been with my bb for a week since i was sick from back to school anxiety and gastrointestinal issues. When i finally got to be with him we had a little fun, but my arousal caused a dull stinging pain in my crotch section. I don't remember exactly, either burning, stinging, something like that.

Has anyone else had that happen to them? I've never been to a gynecologist before but maybe i should go?

What do you think's up?

Maybe useful info v

[ the time i haven't been with him i've had nausea, gas, diarrhea, and i've peed a lot from drinking so much water.]