I just Beat The GMAT!

Hi

I just took my GMAT Exam and I am shocked to see that my scored dropped by 50 points where I was thinking it to rise.
After this score, I am several questions in my mind.
Firstly, How does Adcoms see this trend as? Will they perceive it in a negative way?
Secondly, Will all MBA schools consider 690 as a score?
Lastly, Should I be retaking the exam in a month's time. Is it really worth to take GMAT again.

First Attempt - 690 (Q49, V35)
Second Attempt - 640 (Q49, V28)

I have been practicing a lot and I was able to maintain accuracy with time.
Also, in my GMATPrep practices I had scored 710, 740 and 760.

In my first attempt, I lost score because I had lost track of time.
But in the second attempt, I dont know what went wrong.
While I was attempting question I didnt knew that I have screwed my verbal paper.

I feel devastated right now. Dream of getting into top B-schools looks dim.

Your 690 will still be viewed as the score - everyone has a bad day. You can take it one more time and have the 690 (or higher) be the score, but much more and they will start to discount your profile.