I Cut Most Of My Finger Off 8 Weeks Ago.

I cut most of my finger off 8 weeks ago. 2 weeks ago I had the pins removed from the surgery. Since then my hand seems to go blue when ever it it down. If I raise my hand it will then return to a much better color. I an unable to use the fingers on that hand although only one finger was cut. My wrist hurts from having it in a brace for the last 8 weeks. My arms is starting to hurt. There are no hot spots or red spots on my hand or arm. What is causing the blue color and what can I do to get normal color back?