Stomach hernia or muscle seperation?

Based on the photographs, it appears that you have a separation of the abdominal wall muscles with or without an umbilical hernia.  A full tummy tuck with muscle reconstruction would address this weakness.

After pregnancy, when the muscle fascia is stretched a diastasis rectus occurs which is widening of the fascia between the rectus muscles. Umbilical hernias are also associated with the process as well. The fascia needs to be fixed, tightened, the extra skin can be removed and a pre pregnancy tummy can be approached. My case #32584 exhibits a woman before and after tummy tuck, diastasis repair and umbilical hernia repair.