Hi robinsan,
To start, taking 2 CATs on back-to-back days is NOT a good idea. The process of taking (and reviewing) a CAT requires a significant amount of energy and effort - and takes time to 'recover' from. This is one of the reasons why you typically shouldn't take more than 1 CAT per week.
Since you haven't provided many details about your studies so far, it would help if you could provide a bit more information on how you've been studying and your goals:
1) How long did you study before each of your Official GMATs?
2) How have you scored on each of your GMATs (including the Quant and Verbal Scaled Scores)?
3) What materials have you used for each of your attempts at the GMAT?
4) What is your goal score?
5) When are you planning to apply to Business School?
GMAT assassins aren't born, they're made,
Rich