Getting pregnant

So I'm 21 and I've been with my bf for 4 1/2 years, engaged of course. I really want to start a family with him, I've wanted a baby with him since I was 18 but knew I was too young and couldn't support a baby. I've talked to him about it and he still wants to wait another 3 years until we start trying. He said if I get pregnant before that then he'd be excited to be a dad, but would prefer to wait. We've been living together for about 3 years.

It's been making me just kinda depressed more lately thank what I normally am, I'm ready for a family but 3 more years is a long time.

I love kids so much, I'm going to school to be a kindergarten teacher and I've worked with kids since I was 14.

Just ranting right now I guess cause I know I'm out of luck 😂😞