Hi there, I have been dealing with this for about 16 years or so and still no solution. I seem to get sick randomly after eating (about 15 or more minutes) and it never seems to be the same foods. I get rumbling and lots of gas and then severe pain in the lower left intestines---SEVERE!! It feels like someone is twisting my guts and I can hardly stand the pain. Then the vomiting starts--sometimes just a short while and sometimes hours and hours. When my bowels start to move (usually after a week or so of constipation) it will turn to diahrea and I will eventually feel better--but only after complete weakness and continued soreness in my tummy. Can you tell me what it might be? A couple of years ago I went to a specialist and after many, many tests she said, Well, I can t find anything other than a questionable gall bladder, so let s take it out , so she did. But I guess that wasn t the problem. Thanks for listening.