Hello,
I hope you are doing fine, Well there is no such limitations as such for now and it would not affect in future either. So if you wish to pursue MCA in future which is of 3 Years (in some colleges they complete in 2 Years) You should complete your BCA which is of 3 Years Graduation first. The only criteria to pursue MCA is that you must have scored 60% or above in your graduation and has Maths as a subject in your 12th standard or Graduation. So go for it.
I hope you find this information helpful. I wish you all the best for your future.
Good Luck
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