Thanks for writing in with this query - its an important one!
Many professionals do a second MBA. As a matter of fact MBA Decoder's co-founder, Sachin did a second MBA from LBS (Sloan Fellow) 10 years after the first one.
You don't have to wait that long, but 4-5 years would be a good enough gap. My reasons for saying this are as follows:
1. You have just completed one MBA. It will be difficult to justify a second one on the heels of the first, in your application.
2. You can make use of knowledge and tools you have acquired at FMS at your present job, and retool yourself a few years later. If you want to change your career at that point, the second MBA will help you do that.
3. On-the-job experience will make the 2nd MBA more valuable. I guess the FMS MBA would have involved more theoretical learning if you were just out of college.
4. You would have earned some money (and hopefully saved it as well) in 4-5 years to finance the 2nd MBA.
As the GMAT is valid for 5 years, and your next MBA plans are not all that set right now, it may not make sense to take it now, lest it expires by the time you actually start applying.
Just one more doubt...As per my profile which clgs can i expect to get thru 4-5 yrs down the line at decent GMAT score?