Postpartum period after breastfeeding

Hi!

So I am almost 9 months postpartum. I strictly breastfed my son until he was about 4 months old, but he had a latch issue so we started supplementing. He completely stopped breastfeeding around 5-6 months when he started teething, and just refused the boob from then on. So we started formula. I have not been breastfeeding for about 3-4 months.

All this time I have been on the mini pill. I stopped taking the pill about 2.5 weeks ago due to hormonal issues.

I have yet to have a period. Is this normal? Or is it something I should speak with my OB about?

With my first I was unable to bf him, so I got my period back fairly quick and didn’t take birth control— hence my 2u2 😂 so this isn’t something I’m familiar with.