2nd Beta Results Are In!

It's very different going through a pregnancy as a surrogate. It's still very new to me and understanding what my body and mind are going through is foreign to me. I found myself looking for someone to give me answers after the last beta results; 458. I kept hearing the nurse say she was concerned about twins and thinking that the numbers weren't really that high. She was wrong. Right?
There are not a lot of support groups or forums on the web for surrogates and the ones I did find were old and inactive. I ended up finding one through another page I found during my search. 
It's a strange set up and is taking some getting used to but it's nice to be able to say 5dp10dt and everyone know that that means! I introduced myself to all the other surrogates and told them about my first beta results. They all said twins too. When I asked how and why they explained that beta numbers from a "regular" pregnancy are not read the same as they are with an IVF pregnancy. The numbers tend to be higher. Something along the lines of 400+ for doubles at 10 days post transfer. Okay? Okay. I think. 
So even after reading all their comments I'm still skeptical. It's barely over 400. 
This morning I got up ready for my last beta test. I'm expecting it to double. Nurse C calls this afternoon and my levels have not doubled... they more than tripled. 1670! So... I go to update the surrogate ladies and I'm told, if you doubted it before... there is no doubt now. Those are multiple numbers! 
Here are a list of surrogate Betas to give you guys an idea.  
Beta Numbers for 10 days after a 5 day transfer:                                                          Singleton: 35, 35, 42.2, 49, 54, 67.7, 68, 87, 
105, 106, 112, 127, 129, 163, 171, 181, 196, 217, 226, 227, 230, 388
Twins: 141, 145, 152, 157, 160, 171, 174, 193, 222, 252, 257, 282, 283, 284, 286, 294, 297, 339, 357, 365, 365, 371, 377, 378.6, 393, 406, 421, 510, 594, 611, 636, 707, 804, 969
Trips: 471, 617
Quads: 503


Beta Numbers for 12 days after a 5 day transfer:
Singleton: 46, 58, 72, 89, 97, 126, 161, 223, 226, 252, 298, 300, 342, 351, 376, 416, 423, 430, 505, 526, 580, 699
Twins: 389, 408, 428, 451, 653, 741, 774, 766, 971, 1045, 1149, 1155, 1250, 1507, 1554, 1663, 1709, 1685, 2065, 2408, 2783
Trips: 333, 473, 746, 801, 1017, 1129, 2085, 3028




My first ultrasound is scheduled for July 29th with the local fertility clinic followed by another one a couple of weeks later with my regular doctor. I can't wait!