Replying to Line across my finger?

So I jammed my finger playin catch after school today. Typical dumbfuck move, didn't think much of it, went home and put it on ice. It was hard as rock and its not getting much better. I'm not worried, except I'd like to know what I have a bruise in the shape of a line across my finger. I goes around most of the side opposite the nail, perfect ring. I already feel like a dumbfuck but somebody please tell me this stupid thing will go away when I wake up.