that's pretty much how i felt each time, it was never as bad as i imagined, if that makes you feel in any better. be on time, be honest, be prepared, and remember if it goes good for you great, if not you can appeal.
i think it's because the c and p doctor has so much power, for me my first c and p meant was i going to be able to eat and put a roof over my head, now that is understandably a tremendous pressure, but you can and will get through this have faith brother. berta's post has some really great infomation also check out this article if you haven't already Do's and Don'ts for your C & P exam