Dear C.W.,
It's very hard to care for any child with special needs. However, I have not had a child with Down Syndrome but my children have had their share of special needs issues. I still have to deal with these special needs and frankly at first it was over whelming but I can say this I have learned alot and if not for their special needs I may not have experienced the wonderful people that have come into my life because of it, meaning doctor's, etc.. So there can be an up side to having children with special needs with that said.
I was 35 with my first child and they pushed for an amnio personal decision I said "no" they said if the child would have special needs at least you'd know ahead of time I still said "no". Special needs or not I wasn't going to terminate so I felt like it didn't matter. Besides the special needs my children ended up with you can't see in an amino (developmental delay, ADHD, Ery's palsy) that ended up as diagnoses for my kids.
I think you should get the amnio then once you have all the information make your choice as to what to do after that. If I had felt I would want to terminate if the child had problems then I would have had the amnio, I had made a choice special needs or not the baby would be born. That's were I stood. I had my share of miscarriages and frankly didn't know if when I finally had the first one it would happen. If you are faced with a child with special needs and the choice of terminate or not you won't know that unless you get the amnio so it sounds like you need the amnio to reach a level of if there is even a choice to make.
I know getting an amnio is hard and I too felt like they pushed me as well and they did. I made a choice not to get it and frankly they do scare people that don't work in the health field don't be afraid but make a choice based on how you feel not stats or how others feel. You are the ruler of your body do what feels right to you and don't be pushed into anything that doesn't feel right to you.
My best wishes to you