My son was born DS, did not know in advance...he is 11 know and a piece of work...lol, His sister was born a year later, but truth be...I only know how to raise my childe and daughter, never new anything different so the DS to us just seemed normal.
the tests are not always accurate. I have a 3 yr old daughter who has down syndrome and she is the biggest blessing ever. I was very scared and felt cursed until I held her in my arms. I will promise that if you are lucky enough to have a baby who has DS, you too will feel blessed beyond what you ever dreamed possible. I refused all the tests because it did not matter one way or the other. I already loved her. good luck