Upper abdomen pain 6 months after extended tummy tuck. What could this be?

Hello, I had an extended tummy tuck and breast lift with implants almost exactly six months ago. There were no complications except for needing a seroma drained one day post op. For the past month, I have felt what I describe as pulled muscle pains in my upper abdomen. It started left of my belly button and was just inconvenient, hurting when I laug or cough. Now, the pain is more severe and extends to the upper entirety of my abdomen. The pain comes in waves that takes my breath away.