You can tell that it's a while since I last told our story - I usually add that our circumstances are incredibly rare. Yes, we did have two T21 affected pregnancies, one in 2004 and one in 2005. I was quite isolated as these boards didn't exist at that stage but a couple of years on, some of us got talking on the pregnancy board and this safe space was set up. I think there were three of us at the time who had experience of recurrent T21. But please don't let this scare you. It is incredibly rare, as I say.
By that time, DD was three years old and it was a shock after a textbook pregnancy with her. In all, I went on to have 7 failed pregnancies (1 ectopic, 1 late MC, 3 MMC and the 2 tfmr) and had practically given up, when I had DS in 2010. It's a horrible tale and quite extreme but we got there and those days seem far off now, it's why I'm rarely here anymore. It's like it happened to someone else. The last pregnancy was sheer hell, especially as I really was of advanced maternal age by then but somehow we got through it. These boards were invaluable. (A lot of the story can be found under my old, shorter posting name of Shangrila.)
DH and I were offered genetic counselling, which came back clear. We heard 'just one of those things' a lot but we substituted that in our minds for 'they just don't know'. In answer to your other question, both CVS were performed after high nuchal scans of 4 and 4.5 and dreadful bloods. No harmony back then, the nuchal scan was the latest thing. They did note the omission of nose bone, though.
I always found the not knowing and the 'what if's' to be worse than any reality that I was presented with. Hope you get some news today and I'll be checking in later. Wishing you strength.