@viettransdt I was paranoid too! But try to stay calm. My doctor had me do 48 hour betas upto around 25dpo and the doubling slowed down around 3000 hcg and I was freaking out. All ended up being okay though.
@viettransdt Mine was 34 on 12dpo. So far so good. I'm 11 weeks. As long as your betas are doubling don't freak out. I had the same concerns about my low numbers.
I too had two losses before this pregnancy so I understand your anxiety.