My husband doesn't want kids...

I have wanted children my entire life, all I have ever wanted was to be a mother. Well, about two years ago I had a miscarriage. It happened before my husband and I were married and it was horrible for me, completely devastating. Of course, ever since then, I have wanted a child even more, but my husband doesn't even want to try. He has an excuse for everything: your still in school, I work a lot, we're not ready. I am 24 and yes, I am still in college, but I don't think that should stop us from trying. I think the real reason he doesn't want to try is because he is scared of being a dad and scared that I may have another miscarriage. I want to have children while we are young, but I don't know how to convince him that the time is right. I don't want to be conniving or trick him in any way. I just don't know what to say to him. :(