Thank you for the query.
As you have had an abscess
in your abdominal cavity, it is very probable that such inflammation process has left many adhesions inside the abdominal cavity. This adhesions can give partial intestines obstruction ad cause such diarrheas. Diarrheas are also very common after large bowel removal but this improves after few months. Pancreas inflammation
sometimes gives such symptoms as well.
I suggest you to have some diagnostics. Colonoscopy
and abdominal CT with oral contrast (enteroclysis) should be done to rule it out. Bile acid
sequestrant wont be effective as it is not the bile what gives such symptoms.
Hope this will help.