The same thing also happened to me 10 yrs ago, after I ate some fish
; I thought at the time maybe the fish
was bad, but now that the same exact thing happened again, I know it wasn't food poisoning. I do get diarrhea with bad cramps maybe 4 or 5 times a month, but not to the extent of fainting. Both times the fainting/diarrhea attack happened to me, I had just finished eating. The diarrhea lasted about 3-4 days, with some minor rectal bleeding.