I agree with what everyone has suggested. Have you had all the tests to rule out everything else? My gastro said fiber supplements weren't for me, but I am taking them and they help. I hate to be a party pooper but I had a bad experience with a nutritionist and don't care for them. Other IBS books out on the shelves were written by doctors and nutritionists who get it all wrong or half wrong. Have you given Heather's "diet" a try? I am IBS-D and it has helped me so much I could just go on and on. I am now adding fruits and veggies into my diet. Hope you are feeling better soon.