First period after miscarriage

I miscarried in December @ about 7 weeks. (naturally) dr confirmed I got everything out. I got what I thought was my period almost 7 days ago. It’s been all brown blood, no fresh red blood. It’s not constant and it’s not a lot but enough that I have to wear a thin pad. No pain or anything. Has anyone else had this after a miscarriage? It’s annoying. Just want my cycle to get back on track.