Just a quick one for Glenny: Sorry to confuse. It is different if you are having twins. For twins, apparently some places either can/do/have the technology to do bloods + scan + age to get your combined risk for Downs. The clinic called to confirm my appt today and I asked them again about this lady with twins who had the combined test and they said they don't do it there and something about still not knowing which twin the BT would apply to (although this lady had risk for Twin A and Twin B!) But if you're having a single baby, then you definitely can get BT + scan + age. So maybe that's why you go in earlier for your BT and the nuchal scan is a little later. I have heard even though you can have the nuchal scan from 11 to 13 weeks that it's more accurate to have it closer to 13 weeks. So, sounds like you are getting good advice. GL for your scan!