Low hcg levels

Alright, so I'm trying not to stress but I am. Last Friday I got my bfp, had bloodwork done and my hcg was 80, they said they wanted it to be 100 at this point. The nurse was so cut and dry that it just kind of took the wind out of my sails. I'm getting a recheck of bloodwork tomorrow but can't help to worry some before that. Anyone have low counts and then there body caught up?