How long after stopping birth control should I ovulate?

I had only 3 shots of the depo shot after I had my son then I got switched to the pill due to really long bleeding and getting anemic on the shot. I just stopped the pill on Monday and I’m bleeding again even though I had my period right before I stopped the pack. Is this just my period and I should hopefully ovulate after? Or will it take much longer to regulate? I have PCOS so getting pregnant the second time was hard and I imagine the third time will be even harder. Birth control has never been my friend 🤦🏼‍♀️