Idk what's wrong with me? I wonder if I have a virus?

This has been going on since Saturday morning...diarrhea, nausea (I didn't throw up), gas and burping a lot. It's frustrating cause I feel the need 2 go all the time? I have cramps and stomach girdle? I gone offf antidepressant recently and I remember eating a greasy burrito on Friday? So I hope that's what it is? Can't go to doc cause of no insurance. Any input?