Hello. I had a bit of an accident on my bike 2 days ago and fell pretty hard. I must have done something to my hand, because when I apply pressure to a certain part on top it becomes numb. Sort of like I bruised a nerve? It's hard to describe but it hurts to press on the area, even slightly. When I do a numb sort of feeling rushes through the top of my hand. Any ideas what I might have damaged and if it's just temporary? I'm pretty scared that I might not have my hand back to full capacity.