18 with insane baby fever.

Brooke
So I'm 18 years old, me and my SO have been together for almost a year now. And for some reaso I have baby fever like crazy. I don't know why, but I know me any my SO aren't trying for one right now. If it happens it wouldn't be frowned on, but I somehow want to tell him that I want a baby. What's a good way to bring it up? Is it normal o feel like this? I feel a little crazy haha.