I think it depends on where you get your nose pierced. Is it at either side on the nose through the skin or throurgh the septal area between the nostrils?
I googled this question and some surgeons say that between 6-10 weeks should be ok, but then didn't seem to keen on the idea if I'm honest. But I'm not sure what type of piercing they had in mind. The one in the skin (not setum) seems to less at risk I think.
Wow, your brave, getting a facial piercing, I'm a big sissy when it comes to piercings haha
I know how you feel though, you want to have the things you've always liked but feel you couldn't pull them off with your old nose. I want to get a tattoo after mine (not on my nose of course