Sometimes after sex I have intense cramping in my lower abdomen and feel incredibly nauseous. My body feels like it's overheating (sweating and shaking) and a couple of times I have even thrown up! It happens rarely: about once every two months.
I'm in a long-term monogamous, STD-free relationship of over two years. I am on oral contraceptives. My last annual showed nothing out of the ordinary.
Any thoughts on what might be going on??