I'm currently going through the same thing girl! Watch out for the dehydration! Drink lots of fluids. Some things they are testing me for is gastroenteritis, viral gastroenteritis, salmonellosis, bowel obstruction, giardiasis, campylobacter, ibs, diverticulitis, shigellosis. I go in again on Wednesday. Ya need your doctor gf. And follow the brat diet. Bananas, rice, apples, dry toast (no butter, it will make it worse, seriosly!). Stay away from caffine, my doctor told me too. Apple juice upsets my tummy too. I've so far had to get 3 iv's in the past 1 1/2 weeks for dehydration. Try to get a GI consult, its what my doctor is trying to get me right now.