I took my daughter to the E.R. Monday night for stomach cramps, diarrhea, vomiting, but no fever. She has not been feeling since a week ago Friday. The E.R. did a CAT scan and blood work. Both came back fine. They gave her pain med, anti-nausea med, and diarrhea med. My daughter is still having diarrhea and occasional vomiting. Why has it not cleared up yet and how long will it take to clear up?