Why do I always feel like I have failed an exam after I have sat it? Even though I have NEVER failed one in my entire life, I still feel this way.
The strange thing about going back to study after working for a few years, is that you get used to the responsible (haha!) worker mind-set, and expect yourself to be able to do everything that is asked (at least reasonably). The thing is that in exams, while it would be fantastic to know everything on the exam, it is not necessary to actually know everything to pass. (Well, not for most subjects . . .)
Thus, when you go into an exam feeling like you HAVE to know everything on it, and you don't, it scares the living hell out of you and you feel like you have failed.
Then again, I would rather have a doctor who knows as much as possible, wouldn't you? Even though a lot of what we learn in first-year is just foundation theory, it must still help somehow.
*End rant of massive self-pity*