Hi!!! Welcome to the site!
Being anxious is just normal but don't let it get over your head. Just concentrate on your review and try to answer more practice questions. Try to finish the whole Kaplan CD, because it really helped. Don't forget to relax once in a while...AND pray harder too.
I also got only 58-60% of the questions correct. With God's grace, I was able to pass with only 75 questions. Don't worry too much. It doesn't get you anywhere, believe me. Good luck!! I do hope and pray that you pass. God bless!!