Chronic diarrhea after bowels removed

15 mth. ago i was operated on with severe pain in my right side.They suspected appendicitis but I told them i didnt have one but the operated anyway to see what was happening. They accidently cut my colon and I ended up with peritonitis so had 50% of both bowels removed. They also said I had gallstones but did not remove them. I suffer now fom chronic diareah. 7 weeks ago I had a gallstone attack and they removed my gallbladder and 22 gallstones plus fixed up the wound from previous operation due to it opening up. I am still suffering from pain in the centre of my upper chest and the skin is very sensitive. I also get pain in my right side still plus my bowel hasnt settled at all since the operation. Is this normal or is something not right??