I have had symptoms (frequent stools, the runs, gas, and abdominal discomfort) for about 2 weeks now. At first my doctor said it was some virus and said I should go on all liquid diet and then very light foods with no dairy or fruits and veggies. That did not work either. I went to a GI doctor who said I should give it time. My stool sample was negative so today I had a colonoscopy which also showed nothing. He did take two samples...one to biopsy for infection and one to test for Crohn's disease. He has not come up with any diagnosis and he told me I should use Immodium for the runs until the lab results return. He said it could be IBS but wasn't sure yet. It's not like I am running to the bathroom all the time but when I do it is very loose or watery. Can anyone offer advice as this is becoming tiring and so far I have lost 10 pounds mainly from being on liquids and a very light diet. I do have an appetite but sometimes have a full feeling right after eating. Do I give it more time? Can it be a virus only? HELP!