Am I ready for this?

So, I'm 17, 18 in 13 days! My fiancé is 24. My parents like him, but have never been 100% happy with my choices. He supports me, loves me, makes me feel good, and does everything a man should do for his love/family. We would like to start tryin to conceive a child. I don't love with him though. I graduate in a couple of months and then move in. Is it wrong that we want to start trying? We both fel we are ready! What should I do?