I was eating something and my belly immediately started the cramps, had to rush to the bathroom and I had diarrhea with blood clots. This has started happening again, getting cramps/diarrhea just from putting food in my mouth. I know it's a reflex, but I don't understand the reason, neither the blood clots, because IBS doesn't have blood clots. I had a colonoscopy last summer, it was clear. Bowel movements are exhausting.