Breastfeeding and ovulation

PNW💚

My last period was 8/29, im currently breastfeeding and pumping. My plan was to get an IUD but doctor want me to be on my period in order to do it. Im on CD 33 and no period yet. Decided to take ovulation tests in the mean time to give us an idea of when we should be extra careful. Just got my first positive opk, breastfeeding really messed with my cycle if im ovulating when i should be having AF.

Anyone else getting weird cycles while breastfeeding?