When do you think I should have a baby?

Lately I've been absolutely craving having a baby! It's driving me nuts! I work at a drugstore and often I'll see other babies and baby products which just hits me even harder. I've been reading up on taking care of babies and such, a lot! I'm in a great relationship with my best friend. We aren't married (yet) but it's pretty plain to see by mostly everyone that it'll happen soon. I'm also not so worried about not being a married mom- as in I'm not worried what others will think. I know plenty of women who have a child first and marry after. We both make a good amount of money and are going to college. I'll be getting my degree online and continue working. I've also been on BC for over 2 years. What do you think?