Positive hcg after misscarriage?

I had a medical abortion (pills) 2 months ago at week 9 because i had blighted ovum (twins) and I was bleeding for a long time 1.5 month (was mostly spotting).

So, i checked today to see if my hcg levels dropped but the test was positive 🤔..

I will call to book an appointment with the gynecologist but im just curious.

Is it normal to have + hcg 8 weeks after misscarriage?