i am having problems with my stomach. It started last Friday. I felt terrible and wasn't hungy. Then I had diarrehea. I have continued for over a week and I have had diarrehea until Thursday. I still have had no appetite, I am also breaking out in a light sweat after I eat something. I lost 6 1/2 pounds last week. I stil am having the same problems. I thought this was a stomach virus but I am not sure. Symptoms include no appetite, stomach pain, fatigue, stomach gas, and just plain feeling terrible. Do I need to see a Dr. and if so, what tests should I make sure are ordered?