Babies (question)

I'm 15 and I think about babies and having a cute lil chub chub (I want a boy but I would be happy with a baby girl I know I want a big family of 5 boys but my bf says can't change what happens) so yeah, now I'm not saying I want one now like no I have my life ahead of me and I wanna wait. Not saying that babies take your life away but I wanna experience things and be able to go out and do everything before I settle and have a kid. (Mama taught me that) but my question is is it ok to think about kids and names and gender. And be excited to start a family one day?