Nose piercing

Jess

So I got my nose pierced three months ago (yes with a hoop and he did it with the wrong one but I toughed it out) it hasn't bothered me at all until recently and it's so bruised now and I don't know

What size it is or how to get it

Out to change it and it hurts so bad. Anyone else had this problem after the usual healing time? How do I get this off? What size do y'all think it is? I'm thinking a 16G.