Toenail problem please help!?

i hit my one of my little toes on the couch leg really hard and now its bleeding. and it seems like the nail is about to fall off cos its all wobbly. do i secure it with a band aid (which i really wanna do!), leave it hoping it would stick back in place again, or do i have to pull it out or let time do that! I dont wanna pull it out cos im afraid it might never grow back again! ahhh , will it grow back ? please answer, thanks !