I had an episode earlier where I went to reach down to plug in a light and I immediately experienced severe abdominal pain on my left side. It felt as if something large was trying to get through a small opening and this sensation, with intense pain associated with it, move around in that general area. This happened a week ago on my right upper abdomen. Same circumstance, except that I was sitting in a car and reach to the floor to get something our of my purse. This pain last for about 15 minutes, intense and then it subsides. Afterwards, the area affected is extremely sore. Do you have any ideas as to what this might be?