hcg levels.. HELP!!!

Jocelyn

I just got blood work done 2 weeks ago to confirm pregnancy and it was at a hcg level 30. A week later today I got my blood results back again and it jumped all the way to a 917. They want me to go back in for repeat blood work next Wednesday. They aren't sure how far along I am. When I got the hcg levels of 30 tey thought i was almost 3 weeks. They said im now 4 1/2 weeks or so. Anyone have a similar situation?