Just to let you know, I have been suffering for a few years with the same problems. Cant eat much of anything without getting or feeling sick. Usually the big (D), horrible cramps and some nasuea. I finally am going to have a colonoscopy. I have had the blood work, stool samples etc. I have been told I have IBS but the gasterologist decided I should do the colonoscopy. I bought and read the Eating for IBS book and it has been very informative. I have felt better since I have started to change my diet. However, I feel like I am not eating much due to being afraid to eat and have a (D) attack. Good luck and try changing your diet.