Hi,
I'm 19 weeks pregnant, and thats exactly the reason i didn't get the test for downs etc.
in my eyes it would have made no difference knowing or not, i would have still kept my baby.
All you can think about now is that in a few months time you will have your little angel, and whether it has downs or spina bifida or not it will be perfect to you.
Don't stress though, it doesn't help you or baby and puts you both at greater risk.
My next door neighbour was told the chances of her last baby having Downs was almost definite, and she came out perfect with nothing wrong with her.
Just have a little faith and try not to worry.
xxx