First Period Postpartum

Hello All,

I gave birth to my sweet little lady 4 months ago. On Sunday I got (what I thought was) my period. It started off light and then stopped after one day. Has anyone ever experienced this with their first period postpartum? What was your first period like after giving birth? I always heard the first period after a baby was really heavy. I’m only asking bc I’m now a little concerned it may be implantation bleeding. If it doesn’t return, mommy’s taking a pregnancy test this week 🤦🏻‍♀️