Being what my friends call "Anal Annie" when it comes to grades, yes I was nervous, at first. I really like to see those little "A's" on my record. But, I must say, making A's does not necessarily make the best nurse. I know several collegues that make A's but will not necessarily make good nurses - they can't seem to think outside of the textbook. I have learned that you will learn more during your clinicals than you ever could during lecture. Think of lectures as the building blocks to your real training - clinicals.
Our program is a rather tough one, with some (I admit) not-so related classes (due to the Bachelor's part), but we have not lost even one student due to failing grades.
My best advice is to not worry so much about the grade, but concentrate more on what you are learning and how to apply that to the clinical setting. Get together with 2-3 other students on a weekly basis (if not weekly, then at least q2 wks) to study, decompress, whatever. You will soon learn that this is a really good thing to do - it helps to absorb the HUGE amount of info, but also builds companionship (much needed). No one else can understand the tough road you have ahead better than a fellow nursing student. But, at the same time, as I have said, take time out for fun - otherwise you'll go stir-crazy!!!
The most important thing to remember - you got into nursing school for a reason. If you apply yourself to your own high standards, you will not fail! If this is what you really want to do with your life, it will come to you (with some effort, of course). Relax, and welcome to the world of nursing school!!!!