HI hun, sorry you are needing to make this decision, I had a cvs last year as I had a risk of DS of 1 in 28. I am glad I had the cvs, as knowing what my risk was, I would have been worrid the whole pgcy, not that my pgcy was a worry free one, I still had a lot of things thrown at me in relation to the baby, but knowing that my results had come back normal, made it something less to worry about.
The thing is hun, the decision you are facing has to be made by you and you alone as well as DH. No one else can make this decision, but you need to think, if this baby has trosomy 13 or something else, what would you do? Will you continue on with the pgcy? Would you be prepared to wait until you have the baby to find out if all is well? If knowing isnt going to make a difference and that you will continue with the pgcy, then dont do it.
They told me that when I had to decide, but I went ahead with it, as I needed to know.
Goodluck with your decision, I hope all turns out for you, hugs