On PS2 the your lover/partner you keep kissing, then a box will pop up saying would you like to have a baby? Then you click yes, the bummer about this is that you can't choose the own gender of your...
You cant, however you can on Sims Castaway life stories, when 2 sims of opposite gender are lying in bed, (given your reputation is high enough) select "Make a baby".
A couple days usually go by in sims world, but you need 2 sims (of different sex) to relax in a double bed, have them cuddle and try for a baby. It may take a couple of tries. If you want to speed it...
yes, you can get your sim pregnant on the sims. First, when u move into your house, have your sims talk to each other but make sure that you keep switching back and forth from one gender to another...