Periods after pregnancy

I had my baby nearly 11 months ago and I've had 2 Periods since, one 4 months pp and the next 8 months pp. I never breastfed and I'm just wondering how long it took y'all to get yours back semi - regular after baby. Me and my fiance are thinking about TTC for baby number 2 at the start of next year but obviously for that I need periods, I was thinking leaving it for the next month or two and if I don't have another by January to go see the doctor?