How To Cure Painful Spasms Below Rib Cage Observed After Having Cesarean?

Since I had my first cesarean many years ago, every time I sit or move or bend a certain way, I get a very painful knot/spasma in the upper part of my body , left side, below ribcage, and sometimes in my side and back. I can see and feel the sensation of a knot/spasm, and the only way to get rid of it is to stretch out as far as I can.