Is this a new pregnancy ?

I had a miscarriage 7 1/2 weeks ago and got a vfl today, but I’m scared it’s just leftover hormones from my loss. A few weeks after my miscarriage, they did an ultrasound and my doctor told me that it looked like everything passed.

On 7/19: my levels were at 11

On 7/30: my levels were at a 5

Is it possible that it’s still leftover hormones or am I safe to assume it’s an new pregnancy?