One Step Forward And Two Steps Back

I went to my orthopedic doctor yesterday for my post operative followup visit. The doctor told me that everything looks fine but that it would take about 4 more weeks for everything to be totally healed up inside.
Since the operation I have gone for two walks. Each one was about 1.5 miles long and after each one I have had the same issue. Lots of pain and hardly able to support my own weight when I stand and put weight on the leg.
The worse part of it all is that the nights after each walk, I hardly got any sleep due to the pain in my knee.
Yesterday I did my walk and last night I might have got an hour of sleep if I was lucky. I have decided that it would be best if I not try my walks or if I do try one, that I only go about a half mile at most.
Today I have done all I can to get it back to where it was before yesterdays walk.
I will just have to be patient and let the healing process continue on its own without me trying to re-injure the knee.
Hopefully it won't be too long until I can get back into my long walks and my normal weightlifting routine.