Im 28 and have dub, i i want to get pregnant, does dub go away on its own?if it does how long will it take before i ovulate again?

No clear time: Most women who ovulate normally will begin ovulating normally again within 9-12 months after the last depoprovera injection. If your periods were completely normal prior to using depoprovera, they may possibly return to normal soon again. But it sounds like it may be time to see a gynecologist or infertility specialist for some help to ovulate better.