Worried :(

Yei
Accourding to glow im 4 weeks and 4 dAys, had my first prenatal appt. my hcg test can up at level 71.90 im worried this is too low even tho it says im kinda within range. Im retesting tomorrow hoping a lot higher. Had a mc 3 months ago dont want to experience that again... Help are my hcg levels fine?