Do you think my fiance would agree to a child free marriage?
What did you plan on doing before?
My fiance and I planned to get married and then to think about the possibility of kids, but now I don't want them.
It is rude to plan how your relationship will go without letting her know. You should talk about it before and make sure you are both ok with it.
I'm just not sure anymore that I want kids. It's not that important to me anymore.
Getting married to another person is a big step and you should treat your partner with the utmost respect and honesty. I think you should think about this more before you make a final decision.