Been off depo since August how long does it really take?

Jebresha
DH and I have been TTC for a little over a year got off depo in August of 15 I'm still irregular I get my mens every 2 weeks last week I was spotting for 5 days medium flow I didn't know what it was in thinking of trying Vitex to become regular and conceive plus for the actual baby 😂😂 does that sound like too much or is it the boost I really need?