HCG levels

Je

I had my blood drawn at 12dpo (23) and then it was 84 on 14dpo (today, 7/5/19). Does this seem low? My first 3 pregnancies ended in miscarriage so I’m cautiously optimistic. The nurse said it was great my doubling time was so fast. I also don’t know exactly when I ovulated so I may have ovulated later. Anyone in a similar boat? 🤞🏻🤞🏻