Ok, I'll jump in here!
I have been dealing with this issue for 8 years!! Yup, 8 years!!!
I have been to Dr after Dr had all kinds of tests done & did all the research posiible. Currently I just saw (yesterday actually) a "top Dr" in the field in NYC. Here's my story.
I had never had any digestive issues then got gallstones from my 2nd pregnancy. After a year of attacks I had my gallbladder removed. Immediately my problems started. Pain, & the urgent need to go. It didn't matter what I ate or even if I ate at all! It was terrible. After seeing a gastro Dr & getting a ton of tests done, nothing was found I was told it was in my head, probably IBS & sent home. After doing my own research I tried Calcium Caltrate Vit. D pills. I diagnosed myself with bile salts diarrhea. I changed my diet drastically. It helped but not for long. Finally with help from my regular Dr I decided to try the Questran. It was vile for me & hard to get down but I did it, stuck with it for a while. It did help, but then just stopped working, so I had to find something else. Also, they call that stuff "kitty litter" cause it absorbs EVERYTHING!! So you have to take vitamins, and eat foods that will give you the nutrients it needs. Only problem for me was I couldn't tollerate any vitamins, they made me sick & veggies make me sick & I can't tolerate many fruits because of the acid.
So, I did more research and decided I would try Welchol. It's in pill form & also an absorbing drug (it's a high cholesterol med). I have been on it for almost 3 years now. My diet consists of no spicey, or fatty foods. No dairy, no red meat. Nothing fried, no fast food, no sauces. Basically very bland, rice, pasta, grilled chicken, salad (in moderation) & very little veggies when I can tolerate them.
What has happened now is all my vitamin levels are drastically low. I had a bone density test done & I am 36 years old with bones of a 65 year old woman & have moderate risk of fractures. The Welchol is starting to not work as well as it did.
I've had blood test after blood test. I have had a colonoscopy & had to have polyps removed. I know the diseases that I don't have, (celiac, chrones, colitis) but I don't know exactly why this is going on. It is the most frustrating thing to deal with & it affects my life everyday! At this point the Dr's all agree that this is no longer caused by the gallbladder removal because while it is common to have these problems after the surgery, they usually go away within the 1st year, 2 years tops. They think the removal triggered something else, again I don't know what that something else is. I go on Tues to have an endoscopy to do a bipopsy on my small intestine.
Sorry that got so long! Basically I've given up hope & am at the point that I hate food but I'm going to give this new Dr a shot & do as he suggests & see where it goes.
OP, I hope you don't have to suffer as long as I have & I hope you find something that works for you. Change your diet & try the Questran & see if that helps. Good luck!