I'm 10 months postpartum. I have had 4 periods when have been 8 days bleeding and 8 days off. I started bleeding again last night and it's the heaviest I've ever know. Bled through a nighttime pad in 2 hours.
After my first 2 pregnancies my periods were back to normal at 10 months on a regular 28 day cycle.
I'm not on any contraception but I have stopped breastfeeding when I continued with the others past this point. Could that be the cause?