Is someone coming in with you?
With my last bub (he's 19mo now - beautiful and healthy and trying to play with my face lol), I had a cvs and an amnio (cvs wasn't done right....).
My hubby couldn't come with me (I didn't push it) so our lovely genetics counsellor came in both times. It helped as she was explaining things to me before, during and after. A credit to her, she's awesome & still in our lives because of our daughter with a genetic disorder
Can you practice some meditation and relaxation over the next few days? Just lie in bed, and breathe deep so your belly rises. Let out your breath slowly. Then think about relaxing your body from the toes up - toes, ankles, knees, thighs, hips... Slowly slowly. Keep breathing. Count your breaths if needed.
In the exam room, you can do this aswell. Eyes open you can pick a spot on the ceiling, or eyes closed.
I only looked at the monitor when they did the initial and final ultrasounds. I let them do what they needed to do, and just focused on my stillness and relaxation. This also helped with the labour.
Good luck xxxx