Pain in r.u quad, hepatic flexure area, gallbladder removed, all blood panels normal, bm irregular w/o supplements. ideas as to what is causing pain?

RUQ anatomy: Anatomically, the right upper quadrant (RUQ) of the abdomen includes: liver, gallbladder, pancreatic head, bile ducts and ampulla, c-loop of the duodenum, stomach antrum and pylorus, the hepatic flexure of the colon. Don't forget the diaphragm and lower chest are pretty close by. The abdominal musculature, ribs, and skin can all contribute as well to localizing RUQ pain. An exam is appropriate.