gallbladder surgery

i have had a few “attacks” that have put me in the ER. most people have gall stones or a blockage causing pain and swelling, mine is the exact opposit it is constricted . if i eat anything fattey i am doomed. on the bright side because i have been on a zero fat diet for almost 2 months i have lost about 15 lbs. do you know how hard it is to eat ZERO fat