period already?!?

Lele • 👨‍👩‍👧‍👧mom to two beautiful daughters 10/25/16 & 6/13/19👧🏼Two angel babies👼🏼 08/18 👼🏼 09/18
I'm 6.5 weeks post partum, exclusively breastfeeding and finished my after delivery bleeding 3 weeks ago and I woke up with period cramps and light bleeding. Is this really my period already?!