I used Uworld, it's awesome. If you can afford it, then get it. I purchased the package with one self assessment for $150. You get 60 days.
The NCLEX was fair. Some things I knew and some I didn't. I feel it was on par with Uworld, and I felt prepared. Uworld has the same format, question styles, and etc. I am a slow test taker. I read the question 2-3 times to make sure I comprehend the question.
It's natural to be nervous. I heard my heart beating through the isolationheadphones. Lol. However, I felt a bit more at ease knowing I prepared and prepped for the exam. Do not let your nerves get the best of you. Go over concepts you struggle with. Most importantly, never forget the big picture. For example, if my kidneys aren't working, what other body systems will it effect? What would be my s/s, nursing interventions, and treatments.
You will do fine. Good luck!