It's been two years since my last c-section. I had two c-sections 13 months apart. My stomach is pretty close to flat except for my little problem. I've noticed that when I stretch my arms above my head it pulls on my left lower stomach. When I stand to the side my stomach is flat on the right and I have this fold on my left, like there's skin stuck to my abdominal wall. It's deeper in person than the pic shows. What could this be? What could be done, avoiding a full tummy tuck? Would insurance pay for this?