A little off topic, but this was basically me in June. I was consistently practicing at X before the test, but walked out of the room thinking I was about 6-8 points under that (consistent) score. I'm not a really pessimistic person, so it was very upsetting at the time. Sure enough, when the scores came out I got...you guessed it...X.
Which is just to say that, if you were practicing under realistic conditions and consistently scoring in a narrow range, there might not be as much reason to worry as you might think right now. Good luck, folks!