8 weeks postpartum light pink spotting

Hi ladies not sure where to post my question, but I've had very light pink spotting for 4 days now, we have been using condoms, but I just wanted to know if anyone has experienced this or heard about this. I'm breastfeeding, but my baby has started to sleep through the night, so I thought maybe it was my cycle returning, but it's super light and hasn't started. Anyway, could it be hormonal, or my cycle starting slow, maybe somehow implantation... Any help is great! Thanks