Hi there--
When I was 32, I conceived our 4th child who was born with downs syndrome. Our chances of having a downs baby were about 1 in 500, considering my age, but in this case I was the one(and I know it sounds crazy, but I am so happy God gave him to us--He's as sweet as pie and more fun than a barrel of monkeys;-) )
We went on to have a fifth child, who was born when was I 35, who is completely normal, for lack of a better term. We plan on having more children as well, even though my chances of having another child with downs is higher than average.
I'd say go for it--the chances are hugely in your favor that your baby will be completely healthy.
Maggie