Hi sadiacheema,
The 3 GMAC Official Guides include official questions that are no longer in the "question pool" on the Official GMAT. You'll see questions on Test Day that test the same concepts, ideas and knowledge, but it won't be those exact questions.
It does not sound like you have taken a FULL-length practice CAT test yet, so you should do so. You can download 2 for free from www mba dot com; the CATs come with additional practice problems that you should find useful. A FULL CAT takes about 4 hours to complete, so you should make sure that you set aside enough time before you start one. Once you have those scores, you should report back here.
GMAT assassins aren't born, they're made,
Rich