When to want a baby?

My fiancé and I are getting married this summer and I cannot be more excited to start our lives together!! I'm 24 and my handsome man is 22. I'm anxious to start our family and my fiancé feels like he can wait a while. All I've EVER wanted is to be a wife and momma. How long do you recommend a newly wed couple wait until they try and have their first baby? I want to try within the the first two years of marriage and that seems to scare my man a bit :/