4 weeks pp and ebf but got period?

I’m 4 1/2 weeks postpartum and I am ebf my daughter but I think I started my period yesterday. I’m having cramps, back pain, and my bleeding is back. I also got a horrible migraine the other day.

Anybody else get their period this early while breastfeeding? I didn’t get my period until 1 year postpartum while nursing my son 😩