Hcg levels

Mandy • 29 years old - Married October 2013 - Mom of Baby Girl Dec 2015 😊 Expecting Baby Boy April 2018 ☺️
Beta 1 - 3wk5d - 28 hcg / prog 18.9
Beta 2 - 4wk5d - 855.9 / prog 28.1
I found a bunch of posts on hcg levels, but mine seem so much lower than everyone else's. Are my levels low??
I found this on babymed and with almost being on my fifth week, I'm worried.
Ps. This is my first baby.