Hi there i am kinda worried about why sometimes i get ill after sex, its happended about 5 times now and the last time i was sick and had bad fever well it was a bad sweat my body dripped.. After my partner ejaculates in me on top i get cramps and i know what is goign to happen i wait about 10 mins and then i'm ok but the last time i started sweating badly and feeling sick i ran to the toilet and pooped and was sick in the sink and shakey. This does not happen all the time only rearely, i can't be allergic to his sperm so what can it be?. I have endometriosis and also have abnormal cells in my cervix along with HPV which upset me, couls this be anything to do with it