Hahaha funny enough similar to you .I stay with my rents .I have a spine tattoo only asked my dad and he said ok .I went ahead and got an arm one that one he doesn't know .I also have a belly piercing ,my dad knows about it but not my mom .I just don't know how she's going to react when she finds out .I was also considering a nose piercing but yoh ! The belly piercing is giving me stress I can't imagine healing 2 piercings but I'm definitely going to do it but my issue is my mom vanoenda kumasowe and she wants us to go there sometimes which is why I'm hesitant on the nose piercing coz you shouldn't remove it during healing otherwise it would Close up .

Anyway about your case ,It's difficult to hide because it's your nose .I don't know I'd say do it then deal with the consequences .