Ovulation after miscarriage.

Ru

Does anyone know if it is possible to ovulate when still getting a positive pregnancy test after miscarriage.

I had an MVA for a missed miscarriage and almost 3 weeks later I still had a positive test. I had sex with my husband but the next day later found out I had retained tissue and then had a D&C. Iv still now not had a period and wondering it at all could be possible I’m pregnant again.