HCG Levels

[HopefulMami]

Hi All, I'm a bit concerned about my levels, doc keep saying they are marginal...been tracking them for sometime now and they just seem to keep rising, though slowly...I'd like to hear thoughts from other folks TTC based on experience...

Stats:
3 embryo transfer 14po
1st beta 16
2nd beta 37
3rd beta 437
4th beta 663.

I am 5 weeks and change at this point, should I bet concerned?

 

[AndreZZ]

How many hours apart were the 3rd and 4th done? The 1st 3 look really good

 

[HopefulMami]

3rd was done on 5/8
4th was done on 5/11

 

[HopefulMami]

I guess that would be 72 hours apart?

 

[AndreZZ]

I guess that would be 72 hours apart?

From what I know HCG levels should be doubling at the 72 hour mark in early pregnancy. But dont be discouraged! Are ypu having another set done? Sometimes it can be a little slow to rise aND then just take off from there.
What did your doc say??