6 weeks post-op - one side healing faster than the other?

I had round implants (~300cc) placed underneath my gluteus six weeks ago. I suppose they are healing well but the right side is healing much faster - it has gotten softer and less swollen. Healing on the left side has been very slow over the past two weeks - it is considerably harder and bruising is still visible .I have also regained most of the flexibility in my right leg, but I still cannot touch my chest with my left knee. My doctor says its healing fine, but I wanted to seek additional input