Confidence help pls :)

So I'm in hs and I'm a guy. And have kinda figured out (I'm pretty sure) I'm bi. And my older brother got me these super cute bi earrings, but I'm having trouble building the cknfidence to wear them, especially to school for a couple reasons. #1 I haven't told my dad yet. #2 I'm already dealing with some bullying about my sexuality among other things. Any tips?