Having pain on left side, below ribs but above hipbone. sometimes feels like rib is pushing into a bulge. can be very painful, but not constant?

Colon vs Other: This could represent constipation and gas pain, colonic inflammation from something like diverticulitis, an ovarian cyst or related ovarian issue or a muscle strain of the abdominal wall musculature. If the pain is at this level of the back, then ascending urinary tract infection should also be considered as a source of your discomfort.