I took the gmat over 3 weeks ago, it was a nightmare 450. I never got that score while using Gmatprep. SO I registered again for today, re-read Kaplan, used Manhattan gmat (I'm not somewhere close to anywhere where there are gmat classes). My score went up again. I did 2 tests this week on GMAT prep, first one 640, yesterday got 460. So I tried to calm down and relax, not read, revised this morning. I just got out, I got 500 Q29, V30. I have years of math-based science behind me and I used to tutor other sutdents in English when I was in school. I don't know what to do. I don't know what's happening. it just seems like a recurring nightmare. i really need advice, it's too late to apply to more grad schools and I'm thinking of giving up. I can't afford to waste how much more money on an exam that I do well in every single time except for the day of the exam.