I've had the same thing for 3 years, ever since I had surgery for an ovarian cyst. I've been to so many doctors about this and no one will help. I feel very depressed. But here's what I found out works for me.
I take an advil an hour before sexual activity, then, right after having an orgasm, I take an antacid.
This leaves me with absolutely no pain or nausea. Unfortunately, if I forget, or take the pain reliever too soon before sex, or too early, I feel sick for the next few days.
Does anybody know what kind of a doctor could treat this? I'd rather not take painkillers for the rest of my life.