it doesn't matter whether to say "Yes, I did" or "Yes, I do"

[tedmc]

It's grammatical, but in most situations it would be more natural the other way around.

"To be or not to be - that is the question".
from Shakespeare's Hamlet.

 

[GoesStation]

"To be or not to be - that is the question".
from Shakespeare's Hamlet.

And Shakespeare had a good reason for reversing the usual order of the phrases.

 

[jutfrank]

Shakespeare flirted with The question is whether to be or not for a while but eventually decided against it.

(No, he didn't.)