I want a baby but my husband doesnt.

Rebecca
I want a baby, and my husband doesn't and it gets hard because at times I feel like he is really hinting at it then days later he will change his mind.. we've actually decided to start trying before but when the time comes he will change his mind. 
I finally had gotten the courage to tell him I wanted a baby after he had brought it up and I was very heart broken when I was shut down.. I just need a little advice on how to cope. Thanks in advance.