Nipple piercing

I wanna get mine pierced but I have like a million questions idek where to begin??

How bad is the pain?

How long is healing time?

Can I wear a push up bra here and there (obviously not everyday) or do I need to wear a bralette every day

Is cleaning for it easy while it’s healing?

And any other important info?? I’m kinda nervous but I think they’re so cute.

Also I have such puffy nipples that I feel like the piercings will help