http://www.bobrow.net/kimberly/birth/hcglevels.html
I want you to notice the
wide range of numbers for each.
These types of sites used to drive me nuts when I was first pg, I'd pore over them, looking for reassurance.
I swear and have often said this that the 2ww pales in comparison to the torture of waiting out those scary weeks until the 18w u/s or the 12-13w u/s if doing the NT scan. and it's still scary until you finally feel the flutters and then the worry only shifts to: did it move enough today. see how nuts it can make you??

We have all been there and I think it's because we fight for this to begin with (I have yet to poll non-IF women on this)
My dear, I am sending you a big hug and wish I could take some of your anxiety away from you.

Talk to your Dr about maybe having some anti-anxiety drug, they do have some that are perfectly safe to take while pg and I know of a wonderful, strong woman who took some for her two pg. There is no shame in it.
keep us posted, ok?
Juliemam