Help with hcg levels!!

Christie • 💏👼🏻💔🌈 born 5/7/19👶🏻 👶🏻born 11/19/21

So I don’t know how to feel about this, I had some spotting so I got serial hcgs done and levels went from 13336 to 19799. They didn’t double so I’m worried, I should be 6 weeks 3 days today and my last pregnancy ended in miscarriage at 6 weeks 4 days 😩 idk anything about this tho and my doc prob won’t call me till Monday