What do i do about my bruised toenail, can i save it from falling off?

I had too little shoes for soccer and it was hurting really bad and then i took my nail polish off to find that it was blue and that the nail seemed less stable then a week later i found that it bleeding around the corner and the side seems loose too, what do i do? can i save my nail?What do i do about my bruised toenail, can i save it from falling off?
If it's discolored, it's unlikely that you can save it. I stubbed my toes that bad before, when it comes off it's totally painless and it grows right back.

blushed