Hi Ankita,
Yes, you can go for MCA after completing BBA.
MCA (Master of Computer Application) is a post graduation degree course of two years duration having four semesters.
The candidate having completed Graduation in any course with at least 60% marks is eligible to apply for MCA course. But the candidate should have Mathematics in 10+2 level or in Graduation.
As you will be completing Bachelor of Business Administration(BBA) you can apply for entrance exam for MCA course in reputed institutes easily.
But, MCA would be quite difficult for you as you have not studied BCA course and you will lack the knowledge of basics. Still, if you can cope up with this you should go for MCA.
You may refer to this source article for more detailed information about MCA.
I hope this information helps you.
Best of Luck!
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