Hi harshutd1993,
I'm sorry to hear that Test Day didn't go as well as planned. When these types of score drops occur, the two likely "causes" involve either something that was unrealistic during practice or something that was surprising (or not accounted for) on Test Day. Before we discuss either of those issues though, it would help if you could provide a bit more information on how you've been studying and your goals:
Studies:
1) What type of study routine were you following? Did you take any 'time off' from your studies during the last 6-7 months? How many hours did you consistently study each week?
2) On what dates did you take each of your practice CATs and how did you score on EACH (including the Quant and Verbal Scaled Scores for EACH)?
3) What were the Quant and Verbal Scaled Scores for your Official 560?
Goals:
3) What is your goal score?
4) What are the exact application deadlines for each of the Programs that you plan to apply to?
GMAT assassins aren't born, they're made,
Rich