Post abdominal hysterectomy pain

I had an abdominal hysterectomy with a fibroid tumor removal nine weeks ago. The tumor that was removed was 15 centimeters and the "neck" on it looks to be around one and one-half centimeters in width; I received twenty-one staples from an inch above my navel to just above my pubic hair line. I have healed on the surface. Initially, there was no pain and I have not had to take any medication. There is a numb area on my stomach to the left of the incision site (about the size of a half-dollar); just below my navel I am experiencing pain underneath that area. It almost feels like something is moving around. The pain is a burning, throbbing pain; I really feel it when I attempt to do normal activity or even blow my nose. My doctor has released me to go back to work and I don’t want to be worrisome if what I am experiencing is scar tissue or normal healing. I just need some advice. Thanks