No clue how far along I am

Krystina • Kensleigh Eve 10-21-14 Stephen Michael 9-5-18 Tie breaker due 12/19

I had a miscarriage last month and haven't had a period yet. I did regular blood tests to track my hcg down to 4 and a negative pregnancy test. Tested the other day just because and it's a solid positive. I hate not knowing how far along I am. . Did blood work today for hcg count.