I finished my last class, now what?

I finished my last class a couple of days ago....after the shock is kind of dying down....now what?

I would have posted my confetti, but I don't have any.....yet?

should I contact my mentor?

wait for them to contact me?

do I have to apply for graduation?

what day can I put graduated on my resume, the day my PA was returned back to me, or do I have to wait till I have a diploma, or when I get confetti?