<s>[INST] HI, I have been having mid abdominal left side pain  it started off only with a stabbing pain when i bent over and now it has been a constant stabbing and very uncomfortable feeling, some swelling has occurred. upward motion bothers it the most like sitting, bending over, wearing a belt and getting in my truck. I have had a CT of the upper abdominal done a week ago. [/INST] Hello, Thanks for the query to Chat Doctor. Forum. If I were your treating doctor for this case of severe pain on the left side of abdomen, I would come up with these possibilities, This includes as, 1 The first possibility is of pancreatitis as it may cause upper left abdominal pain which is worse when bending over or sitting. Pancreatic enzyme like serum amylase & lipase should be measured to rule out any pancreatic cause. 2 May be due to kidney stone which may present such sharp pain (however in some case this type of pain radiates to back). For this purpose you need to get an ultrasound abdomen and kidney area. 3 Least possibilities may be acute gastritis and for this get in upper G I endoscopy. Avoid fried food, spicy food , junk food, alcohol. . I suggest you to consult a physician and get his opinion and treatment. Good luck.  </s>