I had a normal NT measurement with my daughter, but the bloods came back with an increased risk. Then the AFP scan came back giving her a 1 in 10 chance of DS. I had an amnio and it came back that she was 100% healthy and she is a 100% healthy 2 year old now. Those screenings are a bunch of BS if you ask me and cause so much unnecessary worry because they aren't diagnostic. They have a blood test now that can be done now at 10-12 weeks that is supposed to be 99% accurate, Maternity 21 or Panorama. It had just come out during my last pregnancy, but wasn't offered to me until I had the positive AFP screening. If you can, get that test. I opted for the amnio because at that time, I would get the results within 24 hours of the procedure and I had already been sick with worry for weeks and needed to know asap for my own peace of mind. Good luck and I'm sure everything is fine!!!