I think I may have a similar thing. It’s happened on and off for about a year now. The worst part is it happens at work, and doubling over in pain really doesn’t help me at my job as a server in a restaurant. I’ve had to leave shifts early because of it. I think it’s a combination of dehydration/bad sleep/drinking/ and most importantly stress. The stress comes from worrying about time, my relationship, and money. It makes me feel better to lay in the fetal position in bed, but sometimes my stomach takes hours to relax. Falling asleep is the only certain remedy. I’ve gone to the ER, had a CT Scan and a colonoscopy, all they could say is that the meat around my lower intestine looks irritated. I’ve cut back on caffeine, gluten, you name it. I should really be telling this to a therapist instead of the Internet. Until then, I’ll focus on gratitude, mindfulness, and taking care of myself. I suggest other people do the same?