I am 47 yr old type II diabetic.  I had a heart attack at 43 at which time i had a stent put in.  I have had lower back pain for the last 2 days and for the last hour my lower left abdomen is swelling...at first i thought appendix but if i am not mistaken that is on the right....swelling is painful ...bout 7 atm
HI Thanks for posting your query.  You didn't mentioned whether you are male or female as diagnosis can change with sex.  Swelling on one side of abdomen is always a matter of concern. Left side swelling could be due to some mass or cyst in the left abdominal qua Chat Doctor.  That to an associated lower back pain points towards problem in your left kidney.  Also, a possibility of pus collection is there.  Is your bowel movements normal ?  If not passing bowels partial intestinal obstruction is also a possibility.  If you are a female then Ovarian Cyst, Ovarian mass or Pelvic Inflammatory disease. Ok sorry if I am being too technical.  Just do these things