Sorry about what has happened to you. I went through the same thing when I had a small bowel resection with my ileocecal valve removed 22 years ago when I was 29. I tried everything, including pepto, Imodium, dietary changes, you name it and I’ve tried it! Constant pain, bloating and diarrhea, missing work, not being able to leave the house . I found a GI doctor about a year afterwards who prescribed me CHOLESTYRAMINE. It comes in little 4 gram pouches and I take it 3 -4 times daily, one dose before each meal mixed with about 4 ounces of water . It was life changing!! I hope it works for you too! Let me know how you make out!