What Causes Stomach Discomfort Along With Cold Sweats?

3 times in the past year I have had this problem. I have stomach discomfort. I would not really call it pain. If so it is minor. Just very uncomfortable. My first reaction is to go to the bathroom. That does not help. Then suddenly I break out into a cold sweat. Head to toe. There are bubbles of sweat all over my body. It literally rolls down my body. My clothes get soaked and the towel I am using gets soaked. After a few minutes which seems like much more it passes. The feeling of wanting to vomit occurs at the same time although I have not been able to bring anything up. This can happen 2 or more times in a period of a few hours. Hours later I have diarrhea. It exhausts me and I spent the entire day in bed. It occurred about 730am and lasted a few hours. I stayed in bed until 730am the next day. Now I feel ok. Just weak.