pp bleeding or first period???

5w pp now. My bleeding tapered off around a week ago. I’ve had brown spotting since. But just came back bright red last night??? Could this still be left over postpartum bleeding or does it sound like my period? It’s enough to fill a thin pad.

I’m breastfeeding also but with my first pregnancy my period came back two months pp I just didn’t expect it to come back this fast???

Whatcha think?