Started stomach virus 1/24 with severe vomiting, fever, headache and then diarhhea. Vomiting stopped approx 15 hrs later. Fever stopped 2 days later. Still have diarrhea with intestinal pain right before movement. Have tried Immodium, BART diet, Pepto Bismol and Gaviscon. Have noticed the pain doesn t bother me when sitting up. Gets worse when I lie down, and at night in bed. I have to relieve myself to make it go away.