Postpartum Period after IUD

Serena • Mom to my beautiful Luna 🌝🌙 and hyper step son Logan

My little girl is 4 months old on the 28th. I started getting my period again after my IUD was inserted (boo so much for no period while breastfeeding!). I got my period for the second time again on Wednesday, cramping and all. Trouble is, the blood isn’t red like a normal period! It seems to be brown like the end of a period (old blood)!

So I guess I’m wondering if any other moms on here had a similar period postpartum, or if it has nothing to do with that and is just from the IUD?!