I had my Gallbladder removed this past August.
( they found a 1.3cm polyp although it was not causing any issues) I ate everything for 2 months w/ zero issues immediately following my surgery! Then all of a sudden, after eating a couple of high fat meals, everything I eat now runs thru me. Now, I am trying to just eat bland, low fat food and it does seem to be helping.
My advice to you is start eating only low fat foods, in small amounts after your surgery. The surgery itself was easy. I didn’t even need any pain pills. Most people that have their GB removed are fine and have no issues at all. Good luck to you!