This has only happened four times. The first time was 2 years ago and then the second was a little over a year ago and the third this last summer in September and the last episode was 2 days ago. I have severe stomach pains then I get dizzy, I know I am going to pass out. I pass out then I throw up. This makes me feel better at the moment, but then the rest of the day my stomach is sick and I have diarrhea. The first two times I thought it was because I ate ice-cream and thought I could be lactose intolerant, but the third was after a sugar cookie, and two days ago it was from cookie doe. It was all on an empty stomach.