newmrsx this such a difficult, diffuclt moment, and feel free to go around in circles as often as you need to.
If the money isn't an issue, or could be arranged, is it possible to not think about invasive testing I.e. CVS or amino up until the Nifty or Harmony actually give you a reason to think about it. So maybe -
First you could book in ASAP for a nifty or harmony.
If results come back satisfactory, then that's the end of that.
If results come back with a high risk which is much much more precise then you need to think about invasive testing, which, in the end boils down to whether you will terminate or not. Which is where it gets hard, really, but not before then.
IF, and only IF, the harmony gives you a high risk, is this question relevant. And then too, you could also just not test invasively, prepare for Downs anyway in terms of research and systems etc, and then give birth and see which way it goes? That way, the preparation point is taken care of without the test? To be honest, if you prepare anyway, and then don't need it, you'll be the happiest person on earth.
I am just trying to phase things out for you a bit, so you don't feel overwhelmed into making all the decisions all at once. Perhaps make harmony step one for now, and forget the rest? Sorry if it sounds flippant, not my intention, but it's so overwhelming all together.