Was my reply bad?

I asked this guy if I come over and he told me he's been busy and that he has a lot on his plate right now. But that he'll tell me when it's good for me to come over.

Below was what I said when I replied to his message

Oh, wow really? Mmm, ok let me know if you need anything.

[Does my reply sound bad? I honestly didn't mean anything negative by it I was just concerned which is why I replied the way that I did.]

Was my reply bad?
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