Husband Randomly...

My husband told me a few days ago that he wants another baby. We were just in the kitchen cooking together and I thought he was kidding, but then admitted he's wanted another for a couple of months now. Our baby just turned 1 about two weeks ago and I'm really enjoying him! (We were much younger (17) when I had the oldest, so I don't remember having this much fun with a baby if that makes sense even though I feel bad putting it that way) I honestly don't want another baby right now. I guess I'm worried that when I do decide I'm ready, he will have changed his mind. Lol. What would you guys do?