Diagnosed with Bile Acid Diarrhea

for as long as i can remember ive suffered with gastro symptoms... mainly a severely distended belly.. makibg it look like im 9 month pregnant constantly. Normally no pain, just this constant belly! no clothes fit, plus its just made me uncomfortable constantly so i never want to leave the house. it has probably also contributed to the massive amohnt of weight gain ive had, that i cant seem to get off!. ive seen many GPs and specialists.. have had ultrasounds and a small bowel MRI.. all of which show nothing. Just recently my new gastro doctor diagnosed me with Bile Acid Diarrhea and proscribed me Cholystyramine sachets. im skeptiCal to try these because ive read it can cause constipation which wont help the distended belly, and diarrhea hasnt always been a huge symtpom for me. has anyone experienced anything like this or have any advice on the matter?