I fell and hit the back of my head on the edge of a stair. I hit right where the bottom of my skull and neck meet. As soon as I hit, I felt a tingling sensation all over my body for about a minute straight. I also got a bloody nose today (which may have no correlation). Is this something I should be worried about? Other than where I hit being really sore and maybe a little swollen, I havent noticed any other symptoms. Thanks!