nervous about 1st trimester screening

Natalie
I have my first trimester screening Friday! I will be 12w3days. In two previous pregnancies this was the ultrasound where I was given bad news and learned my baby wasn't going to survive to term. I'm a nervous wreck!!! I also had the panorama bloodwork done last Monday and get the results Thursday so it's all happening at once. 
I'm also 37 which is old in pregnancy world! Any advice/suggestions?!
Thank you