While you might have said that on impulse. You were able to reflect on that and think logically about it. Which is good.

One thing that's not quite clear to me is whether you simply told her that you no longer want a child (for now) or you also delved into your reasons for not wanting one any longer.

I think which one it is does make a difference. If you simply went back on what you said without any explanation, she might want an answer as to why. Whether your answer would satisfy her is something else entirely. But at least the number of possible explanations that could be racing through her mind would cease.

If it's the second. Well, perhaps she disagrees on not being within the financial capacity to provide for a child. Another thing that could be worked out between the two of you.