On Sunday I took quite a blow to my arm just above the wrist. It is now black and blue from the elbow to through to the fingers. There is a bump just above the wrist, where it took the brunt of the blow. Today it is really hurting right through to my fingers, though it is not prohibiting me from doing things, writing, typing, caring things. My question is, should I get an Xray to see if there is a fracture or just let it heal.