Hello, I Went To Tijuana, Mexico A Week Ago Yesterday.

Hello, I went to Tijuana, Mexico a week ago yesterday. I ate shell fish, muscles, shrimp, oysters from a sidewalk stand. Every night since no matter what I eat, I have woken up with severe intestinal cramps, gas, diarrhea and a terrible smell. During the day I haven't experienced the diarrhea or the pain.