Hi Manat,
If you have taken just 2 CATs - and they were both - 3rd party CATs - then I strongly recommend that you take one of the Official GMAC CATs and take it in a realistic fashion (take the FULL CAT - with the Essay and IR sections, take it away from your home, at the same time of day as when you'll take the Official GMAT, etc.). Once you have that score, you should report back here and we can discuss how best to proceed.
Beyond that data, it would also help if you could provide a bit more information on how you've been studying and your goals:
Studies:
1) How long have you studied?
2) What study materials have you used so far?
3) On what dates did you take your prior practice CATs? Did you take the FULL CAT each time (with the Essay and IR sections)?
Goals:
4) When are you planning to take the GMAT?
5) When are you planning to apply to Business School?
6) What Schools are you planning to apply to?
GMAT assassins aren't born, they're made,
Rich