HCG Levels

When I was in the ER they took my HCG levels & it was 1632. I thought I was 5 weeks pregnant but by transvaginal ultrasound they guessed that I was 4/4.5 weeks along. I don't really track my ovulation, besides an app & that's about it. The doctor said I could have ovulated later or conception could have taken place later, since my bf & I had sex regularly. With my miscarriage in a 2016, my levels rose but barely & never truly doubled. My HCG was low as well...from the get go.

The doctor said my HCG was good for what the baby measured & to see if it doubles in 2-3 days. I'm just scared 🥺