Is it a bad thing to want kids three years into marraige?

hi im desperate i guess thats the best way to describe my feelings for a baby! My wife told me before we got married that she loves kids and wants them too.Last year when i thought the time was ready when we did what we wanted before our kids come we traveled etc but she told me that the thoughts of kids at that moment scared her i understood she wasnt ready so i said ok.this year its worse every kid i see makes me want them more i see my neighbour and friends have kids and they enjoy them so much i know its weird for a man to be broody but its hard.we talk and discuss all the time but i dont see any headway shes the love of my life and i care about her so much i just dont think she understands that she is 29 and im 42 and that im not getting any younger im open to any advice how do i tell her in an old fart ho wants a baby? please help