Coming off BC (depo shot)

I've decided I won't be getting my next shot which is in June. By then I would have been on the shot for 6 months, it's not that I'm having problem with it. It's actually worked amazing for me. But I know it's one of those birth controls that aren't good to be on for long periods of time. Even though I'm 17 and don't plan on having kids for a long time, I don't want to accidently stuff up my fertility young. So my question is what's the best way to come off, is it okay to go on the pill for a bit to help regulate my periods first ( I haven't gotten one since I started the shot). I also plan on talking about this with my doctor on my next appointment but wanted some opinions here first