Hi ledzepfvr, My best friend just had her gall bladder removed over the summer, it was only working to 10% of what it was supposed to. She's in her 40's, but definitely not fat and exercises 5 days a week, so I don't know what brought it on . . . But her doctor told her until she could have the surgery and for a few weeks/months after she should stay away from all fatty foods and limit butter, olive oils, creams, etc. when cooking and don't eat anything that has 4 legs (beef, pork, lamb) - if it has fins or feathers its ok.
Just thought I'd pass this on for what it's worth. Hope you get some relief and hopefully you won't have to stick to a liquid diet, that's terrible.