Patience is a virtue, bitsy690. It's okay to talk to him about this matter, but do not try and change his mind about it - it'll make him feel like you only want him for his sperm. Just chill for a while until he is ready to accept the responsibility of being a father. In the meantime, why not hang out where babies and toddlers are? Baby-sit for people you know who have young kids, do stuff at the local day-care center. You get the idea. Get experience under your belt...Not saying you are not qualified to be a parent, but you don't want to go rushing into baby-making without knowing what to expect.
I'll add this as a final note...Please do not oops your guy. I know the urge to have a baby is very strong for you, but doing that to your guy will put a rift in your relationship and will make some trust issues.