Stomach aches diarrhea had my gallbladder removed 4 months ago constant pain in the abdomen area have to go to the restroom everytime I eat?

Post op gallbladder. Diarrhea is an extremely rare side effect of gallbladder surgery. This is due to inadequate amount of bile to digest food. Medical supplementation of bile salts is always the answer but you need to see you doctor and rule out any other source of you pain such as a surgical complication.