Freaking out about NT scan!

So they are completely booked and can't get me in. I'm nauseous thinking about it because I even asked them about it as we were on a tight timeline and was reassured.

BUT I did the blood work and will get my results and ultimately there is not a damn thing I can do but has this happened to anyone else?! I've been so sick i can't wait untill the anatomy check to see if everything is ok. 😢