First period postpartum

I just got my first period at 9 months post partum. I’m on day 7. This is literally the longest and heaviest period I’ve ever had. I understand it’s most likely because it’s my first after 9 months, does it stay like this? It was never like this after my first baby. I also am trying to get pregnant. Anything I should be worried about or will this interfere with getting pregnant?