Hello - being P is worrying without conversations like the one you have had! It must be so much more worrying seeing as you had a mc last year.
I've had a chromosomal disorder pregnancy (which I chose to end as it wouldn't have survived long). The nuchal fold was 5.8 and 1 in 2 chance. I had another pregnancy recently and I was given a one in 50 chance - he is now sat here gurgling away, so I don't' think you should panic yet.
From what I can remember, your bloods can push the risk factor up if you have recently had a virus, even if you felt fine. They also tested me for parvovirus(?? Think that was it) as that can push up the apparent risk in bloods. The fact that you have a 1.4 nuchal fold is really encouraging.
When I went through all of that last year, my MW was far from cheery, she sounded like they already knew the result. I was strongly encouraged to have an amnio (which didn't really hurt). Their 'knowing' tone let me know straight away things were not looking good.
Anything under 100 something is considered 'high risk' - as soon as you get over a certain age you are 'high risk'. I would say they are just adhering to procedure.
There is another section on here called anti natl tests and choices, all about this type of thing.
I wont' say try not to panic as you will:) BUt think of it this way, a 1 in 69 chance all is fine. Good luck, hope all is ok:) x