Can anyone suggest me about the diet after gallbladder surgery?

Last month I had my gall bladder removed, and since then I nearly feel uncomfortable in my stomach. After I take meals, especially at bed time, I mostly have bad pain in my stomach. Doctor don’t suggest me any specific food to stick to, so I am going with the same diet I am taking before I had gallstones. I want to know that is there any certain diet that I should follow and food that I should avoid? I need diet plan that is beneficial after gall bladder surgery, or any of your personal stories would be helpful?