If it doesn't then your gallbladder can be completely ruled out.
to avoid are processed, high fat, and fried foods
(so basically all fast foods). Many people also have a problem with red meats, pork, dairy products, most oils, alcohol, and eggs. Some people have problems with avocados, coconut, nuts, oranges, broccoli, cauliflower, beans, high acidic and spicy foods. I know that's a lot of foods and it can be hard so keep it simple for a week.