For this last month I have had severe stomach cramps with diarrhea and nausea right after I eat supper. I thought the first time was food poisening because I felt like that but now it has happened again and again. I was in so much pain I thought I would pass out, my husband had to hold me up I was so week. I have not been sick or I didn't eat anything out of the ordinary. I had a physical and she said I was in good health but I don't think they did the right test. The only common thing I ate was lettuce everytime it has happened. My whole family ate the same thing and I am the only one affected. It has happened twice in the last two weeks and it is worse this time than the last. I feel weak the next day and I steer clear of food alltogether...soup maybe. I am afraid to eat, can you please help me.