I used to be on Dianette, which cleared my spots up to almost nothing. Then I went on the Depo Injection, because I didn't want to be on the pill anymore.
My spots have come back a bit since. :\
I'm having the Implant at the end of June. No idea how it'll be. Might have to go on some other medication.
But if they do come back while on the Implant, you can take other medication for it, can't you? I can't remember the names of the tablets but there are ones specialised for acne.
You could always ask your doctor?