After eating a box of food (the ones you buy at the stores) I started feeling with some inauseas. I took some peptobismol and I got better, but at about 6 pm I had an episode of diarrhea (only one) and started with 101 fever. I am still running a low grade fever with no other symptoms but very sore, and tired Could be food poison? Or may be a virus? How long could it last?

Impossible to tell without an examination.