hello everyone.
I hope you can enlighten me.
problem: A isn't sure if she had told B about her next travel.
so she ask :
question: Which of the following phrases is/are correct?
Did I tell you that I would be going to Italy next week?

Did I tell you that I'll be going to Italy next week?

Have I told you that I would be going to Italy next week?

Have I told you that I'll be going to Italy next week?
I assume that between (will be going) and (will go) don't make any difference in this case as well as (would go) and (would be going).
please help.I need advice.
thanks