can you put earring backs on nose piercings if they keep falling out?

Yes, you can. I did that before but after awhile it got old and wouldn't come off.(It was gross) Plus it makes you wanna blow your nose all the time. Get the screws they're better. =]

NO, NO, NO, NO, NO, NO, NO, NO. USE A REAL NOSE RING.

Noooo...
Someone had an amazing X-ray of a butterfly back stuck up their nose.
I can't find it again though =/

If they fall out. Buy a nose screw. They don't come out by themselves.

No

Get a nose screw, or even an L shaped bar.