Changing a nose screw can be a pain in the but, but here’s some tips. DO NOT attempt to change your jewelry if your piercing is not healed. In the event that you accidentally pull out your nose screw put a earring post in its place. DO NOT put the end on. If it won’t stay in cover it on the outside with a band aid or piece of tape. Then go asap to the place you got it pierced to have THEM put it back in.