I'm about to get married and my fiance and I have not talked about having children. I worry about starting this conversation with him - I want many babies and he seems disinterested! How should I do this?

I agree with Ametees. Since you are starting a very important chapter in your life, its better to iron out all the crinkled problems before the big day. Having a baby is a critical decision that both of you will have to commit to. So it's best you know where your fiance is at on this matter.