Hi Amanda, Good heavens my friend, how dare anyone try to shoot you down in flames. It sounds as though you've had moe than your fair share of stress to deal with!
Re the amnio, I had the test done with both my children. I had no qualms about it at all. I have family experience of Downs and was fully aware of the test itself.
I was confident the consultant did a good job, as you are able to watch on the screen as the needle goes in your tum and my babies didn't seem to be affected in any shape or form at all from watching them. I was advised to rest for 48 hrs after and that was it.
The peace of mind on having the result was wonderful, I was left to enjoy the rest of the pregnancy.
If you have decided to have the test then please don't worry unduly about it.