I have had in my younger years around age 24 terrible attacks, It would start around 11 p.m. and continue for a couple of hours, I would be pacing the floor, because I could not lie down, that would make it worse. It hits people differently, my neighbour had attacks that would have her rolling on the floor. I had gallstones, she had a gallbladder infection. Even so, they are both painful. I had the operation at age 25, I had many small gallstones, some of which they put in a container and gave to me, they resemble pebbles, octagon shape. If one of these stones gets stuck in your gallbladder duct, that is what causes the pain to start. The doctor said you get these from eating to much fried foods. Come to think of it, we did eat alot of fries, KFC etc. When I had the operation, I had to be careful of fat intake, certain foods caused a reaction, even though I no longer had my gallbladder. This only went on for a little while. While I was in hospital, they had me on a strict diet of skim milk, jello, things of this sort. At home if I ate peanuts or hot dogs, they would trigger a reaction. My doctor when he discovered I was getting gallbladder attacks in the beginning, told me to take Mylanta, seems I was downing that stuff all the time, it was the only thing that softened the pain. Now I understand they have Mylanta (extra strength)