How can I help my knee heal more quickly?

In April, I fractured my right patella (it actually broke into 2 pieces). The bone and external excision (from surgery) have healed and I began physical therapy last week. I wore a brace for 6 weeks, so there are weakness & flexibility issues. My pain level has actually increased since I'm using the leg more (I have fibromyalgia too, if that matters).

Are there things I can be doing along with my therapy to assist the healing process?