HCG levels?

On 8/1/20 my levels were 154(14dpo)

Today 8/9/20 my levels were 2110(22dpo)

Which would be a 8 day span. Do they seem to be doubling ok ?

Also had an ultrasound done today as well, I am measuring at 5w2d, just a GES SAC. No Yolk Sac or Fetal Pole seen.

Does that sound ok?