Fingernail Black (Jammed In Door)?

Hello. You fingernail will probably eventually fall off. It may take awhile too, like a few months. Ive had this happen before and its not all that bad, just be careful cause when it starts to fall off it will snag on everything. For future reference if it ever happens again. Poke a hole in your fingernail and drain the blood out. You have to do it before the blood coagulates. This will keep the nail from falling off