Anyone who has taken the NCLEX-RN! HELP!!!?

I am about to freak out because I am taking my NCLEX-RN exam on Tuesday and I feel like I am completely unprepared!! I have been doing like 200 questions a day for a total of about 2500 and only averaging about 68%. I have been using the Hogan comprehensive review book which I heard is hard but I'm so worried that I'm not doing well enough. I can't seem to do better then 68% on my tests! Please someone give me advice!! I also use other resources like Saunders, Lippincott, and a Kaplan book