Am I wrong?

I have only been with my girlfriend for 7 months and she is already talking about starting a family??????????? I wouldn't mind starting a family but I want to be married first. She called me materialistic because I want a big fancy wedding that will deplete our finances when we should be saving for a baby. But I thought relationships were about compromise. I'm the one that will be carrying the baby, so shouldn't I get my wedding first? What do yall think?