I’m experiencing similar! It started 2 years ago with severe bloating pain and diarrhea. The only test, and it was borderline was SIBO. Small intestine bacteria overgrowth. I did two weeks of xifaxin (spelling) which made me very sick and I lost almost 14 pounds. I would get attacks that felt like gallbladder except I don’t have one. I’ve had every test including fecal mri contrast colonoscopy endoscopy celiac chrones etc. I’ve just completed a complete ObGyn tests and exams. Thank goodness everything is normal but me. I’m sitting here with bloat cramps and exhaustion. I’m on diciclamine and Prilosec gas pills and cholestipol. The Attacks have stopped but I’m still miserable. Gastroenterologist said it’s IBSd. I take Imodium everyday! So what is really wrong with me!