DEAR BODY CANDY: My piercer did my nose piercing with a 16 gauge. Is there any reason why I can’t switch to an 18 or 20? I have a possible procedure that I should consider a non-metal piercing for 6 weeks when treatment takes place and the 16 gauge Bioplast retainer type are quite the conventional piece. I do wish to know if I could have a more colorful or smaller gauge. If it helps, I’m 9 weeks post piercing. Thank you in advance.