Hi Laura-
Exams are so stressful! You are not alone in feeling the pressure to perform, especially given the clock ticking away as you go. I would agree with the feedback that others have provided thus far. For me, doing the data dump of all formulas when I first walked into the testing room helped clear my mind and helped me to relax a bit. Definitely freed up some brain space. Some of the questions because of their length can be quite frustrating and also make your blood pressure rise. As others mentioned, the answers are often times clues for the direction the question is going or intended answer. Use that to your advantage. Also, if I found I was spending too much time on a question, I noted it on my scratch paper and came back to it later. I know the test program has that feature as well, but I also like visually seeing how many questions I needed to return to after my first pass. For some questions, I wasn't ready to answer them at the sequence they appeared in the exam. Coming back to them later let me focus on the quick victories of the answers I knew right away. Then I could spend more time concentrating on the more challenging questions and not get anxious since I had already made my first pass at the complete exam questions.
Whatever you do, stay calm, take deep breaths and look away from the screen for a short break if you need to collect yourself. You got this!