My husband gave me his stomach flu over a week ago. It started with a low grade fever, chills and diarrhea. I am feeling better but still have diarrhea. My question is… at what point do you contact your physician? After I eat I need to use the restroom (diarrhea) and it burns when I go… almost like I have tears or fistulas? It doesn’t bother me if I’m not in the bathroom. Is it possible for a stomach bug to cause a flair-up?