Hello dear student, 

Greetings! 

You should go for MBA , right just after your completion,  there's no point in doing it after post graduation as MBA is itself a post graduation degree.

MBA, short for Master of Business Administration, is a post graduate degree.

The prospective applicant must satisfy one of the following eligibility criteria for admissions to the MBA programme. A graduate degree under 10+2+3 or 10+2+4 pattern under any discipline, securing at least 50% marks in aggregate, from a recognized university. 

Thankyou