One website warns: Caution must be used in making too much of hCG numbers. A normal pregnancy may have low hCG levels and result in a perfectly healthy baby. The results from an ultrasound after 5 - 6 weeks gestation are much more accurate than using hCG numbers.
this is the normal range:
7 - 8 weeks LMP: 7, 650 - 229,000 mIU/ml
So, you are within the normal range.

Why are you so concerned with the HCG levels? Have you had a miscarriage before? Is this your first pregnancy?

Hi deteragram, I've had one miscarriage and one stillbirth, but that's not the reason I'm so worried. It's just that I find it hard to get all excited and happy about things that are out of my control - like a pregnancy. I noticed that my numbers were doubling slower than the websites say they should. But as they are high numbers I don't know if it's normal for them to have started slowing down by now. If I'm destined for miscarriage this time, I'd like to know it. That way I won't get all my hopes up and be too disappointed. Thanks for your answer. I feel a lot better now.

I'm sorry you've had such a tough time of it. Here's hoping you have a full term, healthy pregnancy and baby.
Good luck.