Just spoke to my BM and she had her 20wk u/s yesterday. Dr. told her she is measuring way too small and is concerned. Wants her back in 4 weeks. I asked her if she knew the measurement, she did not. Dr. mentioned possibly Downs and she may be asked to take a test. Spoke to my attorney who will request the records, but didn't want to call until tomorrow, b/c she doesn't want to seem pushy. Of course I have the worse possible thoughts going through my head and I am freaking out. I know I shouldn't until I have all of the facts but not helping. Any advise?
Thanks everyone for your well wishes and thoughts. I received the medical reports today and sent them on to my doctor. Still waiting to hear back from him, but looking at what little I do know, weight is only about a week - 10 days behind where the doctor expected. Feeling a bit better today.

Re: Not sure if I should be...but freaking out - Update
Seeing her every 4 weeks is normal, so I wouldn't worry about that. It's standard prenatal care. I'm not too sure about babies measuring small. I'm sure that could probably mean a lot of things.
I know ppl always say try not to worry until there is something to worry about, but that's practically impossible when you are talking about a baby, IMO. If you are on good speaking terms with her and she was willing to share all of this with you, maybe ask if you could have permission to talk to her dr and ask him all of your questions and see what the implications are.
So sorry to hear about this concern. I sure hope everything turns out ok!! ((hugs!))
There can be many reasons for growth delay and it is really hard to know what the main possibilities are without seeing the records.
How difficult to hear this kind of info, 2nd hand no less, and then to have to sit back and wait calmly for more details. UGH. I wouldn't be good at this either!
Once you have the records from the BM's OB, it might be helpful to speak with a genetic counselor. S/he could go over the possibilities with you (and the BM) and explain the benefits and limitations of the testing options that might be available for further information. If you need help finding a genetic counselor let me know - I'm happy to help.
Sending good thoughts your way!