question: Hi.  Three nights ago I had an episode of heavy diarrhea, stomach ache and then vomiting. But the nausea might have been because I had gotten cold sweats from the diarrhea and stomach ache. The stomach ache is in the lower abdomen. I’ve had the discomfort in that area now for three days, usually a half hour after eating, but it hangs on.  Ive had only a little diarrhea and no nausea. I’m becoming concerned as the ache in the abdomen seems to be hanging on too long if it was related to something I ate. I am a 67-year-old otherwise healthy female.