Hi, you seems for me very worry, listen don't pay attention to anybody with negative advice, this is a personal experience, all that you have to do is keep focus in what do you have to know to be ready for the exam, in the different areas of content.
The most important thing is to trust in yourself, and you are responsable for your selfpreparetion, I 'm a forein Nurse too, actually from Cuba, we really have more exams specially the English one, people told me million negatives things, but you know what all of them are not even CNA in years, and I 'm almust ready for my national board with only two years in the US area and working 12 hours almust 7 days a week to support myself and my family.
Not way, keep away from fustration, pray, walk or run, release energy, get a healthy stuff to eat, think how beatiful can be when you become in an American RN, how different your days can turn.
Hope that you feel inspired after this.
My best regards and good luck, anytime to help you.