Super light 1st PP period?

Did anyone else have a super light 1st postpartum period? I’ll be 20 weeks PP tomorrow and on Saturday I started bleeding, a little more than spotting but definitely not a lot. That night I bled a tiny bit but yesterday I barely bled at all and today I don’t see any blood. I’m breastfeeding and got my Copper IUD in June. The only reason I think it’s a period is because it’s more than spotting, but I could be wrong. I haven’t had cramps or any regular period symptoms either