I fell backwards with some force three months ago and landed on my right elbow on a concrete floor. At the time it was cut and came up in a large bruise. However it has always been painful since in the lower and upper arm (lifting/turning a key in the door etc) but these last few days it has started to hurt a lot more and now I find my lower arm , hand and fingers are freezing cold and feel numb. I did not go to the doctor at the time of the fall as didn't want to waste his time.