and so my decision

So given that only a handful out  of 70% of ovulatory cycles post age 40 are fertile, how would one respond to the question as posed by my obstetrician? I am sure that there are women out there who would see a pregnancy at 40+ as a calamity to be avoided at all costs,my mother for one ...but there are a lot more who would appreciate this as the miracle of life,birth,nature and the whole darn lot!
I am one of those women, after trying for  many years to have a little family and for that last elusive child I was over the moon and NOTHING and NO ONE was going to rain on my parade....
So as the risk of a miscarriage during and post invasive diagnostic tests  is higher than a natural risk of any genetic defects I declined any invasive tests
You must all understand that my daughter who was born when I was 34 years old has Turner's Syndrome and because of my being "in the right" age group for pregnancy no diagnostics were offered as I was not at risk! So I chose to let Mother Nature decide,considering my daughter is a joy and I would not exchange her with any other,nor change the circumstances of her birth for all the tea in China, I faced any "risk" with equanimity and in fact a positiveness beyond my usual state of mind .