Hi,
First of all, congratulations! I just wanted to add something that happened to my sister's sister-in-law (her husbands sister). She had the NT and was told she had a very high chance so went on to have the amnio/CVS (not sure which) and was told her child was going to have severe disabilities. She decided to have the baby and deal with whatever the outcome was. Her baby is perfectly healthy with no disabilities and nothing whatsoever wrong. Just something to consider as well, tests are never 100% and can sometimes just cause stress and worry when you should be able to enjoy your pregnancy!
Good luck with whatever you decide xo