shirley: I think from what I know, the results are very skewed for the category above 35 years old. As such, I agree that this might be a false positive. If your NT scan is giving good results, I think there is a good chance that your bb will be ok. And like Pris say, if there is no history, then the odds are cut down too. Dun worry so much...
Pris: Really? I hate that. Only drink a bit of the vinegar and take a bit of the eggs that my MIL cook with it. But I was lucky for my #1, I had good supply. Hopefully, it will be the same for my #2 too...