I have similar symptoms. I had a lap chole in October 2014. Gas bloating diarrhea alternating with constipation. I take lamotrigine for seizure prevention. GI issues a side effect. My dose was reduced by 50 percent. I am better but still working on this. I have a GI apot in November. I have been working on dietary issues.

No doubt related to the gallbladder removal. I'm dealing with increase diarrehha since mine was removed almost 3 yrs ago.

Your bile now is a continuous dripping into your intestinal system, where as with a gallbladder it would go into it and wait until a meal was eaten and then release what was needed inorder to support the digestion.

With bile constantly in your system, your intestines don't like that and so it will get rid of it faster....it sort acts like a laxative now.

I was first diagnosed with IBS-D, but am looking into BAM (bile acid malabsorption). Did lots of natural supplements at first to correct a digestive system that was in dysbiosis (messed up with too many bad bacterias). Was just in to see a gastro doc and she immediately said I had BAM for the simple reason that i have diarrhea and no gallbaldder. Her only answer was a drug called Colestipol which binds itself to the bile and takes it out with your poop. But I don't want to take a drug jsut to see if that will work but she can't do the tests that will determine for sure if I have BAM, so now am back to my other doctoor which does a lot with functional medicine as well.

The two tests that can prove if I have BAM BA48F / Bile Acids, Bowel Dysfunction, 48 Hour, Feces and the 7 Alpha-hydroxy-4-cholesten-3-one (7aC4) tests. So waiting word from her now.

I've been reading also that increasing soluble fiber and keep fat grams per day help a lot too. So will be working on those in the meantime.

Hope this helps send you in to some more exploration. Everyone is so different and sometimes the docs don't help much so we have to be our own best advocates.