Had gallbladder out over a year ago & still having problems. Symptoms are: upper right quadrant pain, bloating, excessive gas, intense pressure on right rib, glassy eyes, itchy face. This pain mostly occurs after eating, but sometimes after only drinking. Have had blood tests which are normal, MRCP (normal) & currently awaiting ERCP to be scheduled in the near future. Can this be caused by a small stone or sludge?