Suggest Remedy For Numbness In The Arm And Headache

Hi Yesterday, I slipped and hit my head very hard on a rocky surface. I was unconscious for a few seconds but was fine when I got up. However, I started to lose feeling in my arm and can t hold my weight very well on it. I looked at my arm this morning and it looks as though my tricep is out of place. Could this be nerve related, or is it likely that I ve also hit my arm on the fall and it s swollen? There is no pain on my arm, and only slight pain on my head.