I Ran Into A Steel Door On 5 Dec, 2014.

I ran into a steel door on 5 Dec, 2014. I damaged the arthritic vertebrae in my neck and now need to have them fused together.
About 3 weeks ago, I noticed swelling between my shoulder bone and my shoulder muscle in the front. Could the neck injury be causing this swelling?
My Orthopedic Specialist (who is a workers comp Dr.) said I should have blood work done. He said it could be a sign of something more serious, and not related to my neck injury.