I got my nose pierced 2 weeks ago today. I was piercing with a 18g needle, and have 18g stud in there now, but I would like to put in a 20g stud that I got. I wouldnt mind having my nose go to a 20g because you can find more jewelry for it...but if I decided to put the 20 in, will I still be able to use 18s? A girl at a body jewelry shop told me she switches between 18 and 20 all the time. Is it true that even if my piercing shrinks to the 20g a little that I can still use 18g jewelry?