Positive pregnancy test 6 weeks after miscarriage

Cheyanne

Hi everyone I miscarried at 6 weeks gestation 6 weeks ago. When they tested my HCG in the ER I was at 1000 and in 72 hours dropped down to 100 that was six weeks ago. I have had extreme breast tenderness and lack of motivation and still no period so decided to take a test. Is it possible in pregnant or the HCG is still in my system ?