hcg and fetal heartbeat

i went in for an ultrasound at 7 weeks, and there was a heartbeat, fetal pole and yolk sac. they said everything seemed fine. in the mean time, i got the results from hcg tests that were taken the previous week. they were 7039 at around 5 1/2 weeks, 9897 five days later and then 10, 852 three days later. the hcgs were taken prior to the ultrasound, but i am concerned that they did not rise appropriately. i am very stressed now and i know that is not doing the fetus any good. i know that the ultrasound is ultimately more important than the hcg tests, but does it mean that there is an impending miscarriage?

[Heather5]

Hi Arlene! They say once the levels get high like that, the doubling theory no longer applies. Plus, once progress can be viewed on ultrasound, that is a lot more accurate than HCG numbers anyway. So try not to worry and enjoy your pregnancy! Congrats!

[Jenny5]

From now on the u/s is more accurate.My Re doesn't take the hcg anymore once the embryo is visible in u/s cause is more reliable.Seeing a heartbeat lowers your chances of m/c so try not to stress and enjoy your baby.