Seriously, loosing my mind

My brain is full. I can't remember any more. I'm not a great test taker. I'm terrified. My board exam is on Thursday at 10am for 6 hours... I'm told not to study the day before the exam. I'm scared of not passing... I'd have to wait to take the test agian for 90 days... that comes out to January 10th. I don't know what happens to this whole job thing if I fail... I don't know what they'd do, or if I'd still have a job. This is scary. Please pray that I can be calm until then... and on Thursday that I can pull out of the corners of my brain everything I've learned in the past 2 years... That I can concentrate on the questions and not worry... and that when I really have no clue, that I can make an educated guess. Your prayers will definately help. Thanks for all your support! :)