Baby Fever to the MAX!!

Has anyone experienced this to the point you can't take it anymore. I'm so young I'm only 21 and am nowhere near ready for children. But when I see like ALL my friends and co workers having children , I find it really hard and patronising when people say to me "your not ready yet"

I know I'm not. But I'm so so broody. In not ready. My boyfriend isn't ready. But it makes me so jealous when I see everyone else having gorgeous baby's and I'm like stuck at this point in my life where I can't move forward.

Did anyone else have this experience. And what advice would you give ?