[Raptor]

Hey
You're not alone, I'm in the same place as you.
I'm in a steady long term relationship with my boyfriend, and we've discussed our future on numerous occasions.
I'd love to have his children, I think about it a lot, but I know it's not practical or fair to go ahead with it just yet. We're not yet financially secure and we're still young and working full time.
I know it sucks but you've really just got to wait. Don't worry about it being on your mind a lot, that's fine.
It seems you're very clued up and being sensible about the whole thing, and it's good that you can talk to your boyfriend about it all.
When the time comes for you to be a mother, I'm sure it'll be even better as you've waited for the right time, and you'll be fully prepaired and ready.
Raptor!