Help!! HCG Level?

Hey Mamas! I am about 4w3d (super early!) and my OB did blood work Monday (4w1d) and my hcg was 77. She said that’s low, and is having me come back tomorrow for more blood work to make sure it’s doubling. I am so nervous! We lost our baby girl at 10 weeks in June and it was horrific. I am wondering what your early hcg levels were? I need some affirmation!!! I checked betabase.info and it looked pretty normal to me for being so early. With my son, we didn’t do blood work until like 6 weeks so my levels were a lot higher, so I have nothing to really compare to. Help!!