Sending you all hugs and support.
I can't appreciate how you are feeling, I didn't have to go through it. My "routine" test all came back OK and I never pushed to have any further tests. But the moment my DD was born I knew that she had Down Syndrome, she looked up at me with her beautiful hazel eyes, and I knew. Yes it was a shock,yes it was frightening- approaching an unknown, but the love was still as instant as it was with my NT son. The only issue was I wasn't really aware of my babies "special" needs but your knowledge grows alongside your love for your child.
I am no super mum, DH is no super dad, but we love our children to bits and we will do whatever it takes for both of them.
DD started mainstream school in September and although I am still struggling with our LEA, she is progressing remarkably well with very little support. She is happy, she is funny, she is bright, she is fun and loving and has the ability to light up a room and be the centre of attention! She is strong and determined and a very confident little girl.
You have to do what you feel is best for you, but please don't be frightened by some of the literature around which can be so negative. Don't be frightened by DS, there are a lot more "disabilities" that can go undetected and sometimes I feel too much is focused on Down Syndrome.
Hugs, Dingle.xx