Hi Hon
Take a deep breath and relax. The NT scan only shows one component of the test. The scan results are combined with your age and blood test results to give the full NT results. Don't go working yourself up as you could be stressing for no reason at all
As for the sonographer, well what a stupid cow! Fancy making you feel like that and stressing you out unnecessarily! If there was an issue, she should have spoken to you about it there and then. You had every right to be looking at the screen too and were most definitely entitled to a photo of your little one. If I was you, I'd be making a very big complaint about that woman - her attitude sounds appalling!!
My best advice is to stay off Google as it will only worry you more - self diagnosis is evil and dangerous (and yes, I've done it many times before too!). Get you bloods done and book into see your doctor as soon as you can to discuss the
full results.
I really hope everything is ok with you little bubs