Nuchal Ultrasound

I am having my nuchal translucency ultrasound in two hours, and I am beyond nervous. Had a MMC in late April, so every time I go in for an ultrasound I have this fear of them seeing nothing or that something is wrong. Currently I am 12w1d. 
I saw my baby on ultrasound at 8 weeks, and everything looked great. The heartbeat was 169. I have a good feeling about this pregnancy, and haven't been worried the past few days, but I got zero sleep last night. 
I would appreciate any prayers and positive energy you all could send our way!