Hcg/ viability scan

At 4 weeks 5 days my levels were 1067, at 5 weeks 5 days they were 5283. (Doubling time 63 hours)

An ultrasound at 5 week 6 days measured a gestational sac with a yolk sac in it at 5 weeks 1 day.

Any other people experience something similar with a positive outcome?

Pregnancy 5. Two losses two healthy and this one