HCG Levels after miscarriage

Melissa • Ectopic 10/17👼🏻 Partial Molar 5/18👼🏻, Miscarriage 11/18👼🏻. 🌈👶🏻 1/20. Pregnant with #2 🤞🏻 6/22

Found out Monday that I am having a miscarriage. My levels didn’t double on the second round of blood tests and then went down on the third round. Just wondering how long it took others for their hcg levels to go back to 0? This sucks big time 😢