Pregnant or first period since baby?

Hey guys! So my baby girl will be 7 months old in a week. About a week ago i started what i thought was my first postpartum period. But it only lasted 2 days and was very light the 2nd day.

Is that normal for a first period after having a baby or could it be implantation bleeding and I'm pregnant again? I have tests to check but I'm not sure when to take them since i have no "last period" to go off of. 😬

Picture of my girl for attention and because cute