NT scan - 6.3mm reading

Christy
I am a mess right now because my NT scan came back 6.3- normal is 3.0 and below.
This means I have a high risk of baby with genetic defects and with only 15% chance of being borned alive and well.
Anyone going through similar issues? 
I'm scheduled for a CVS next week, but i just can't comprehend these right now. I'm so scared.