Possibly pregnant after miscarriage

Mollie • Mom of an amazing little boy. Trying for our rainbow baby 🌈

I had a miscarriage on the 22nd of July. I had a normal period in august, my last day was a week ago exactly. Today I was spotting so I took a pregnancy test. It came back positive...I haven't even ovulated since the miscarriage, I'm in my ovulation window now. Do you think it's still showing positive from my previous pregnancy or could I be pregnant?