Whether or not you can make a baby depends entirely upon your population at that time. If you start a game on Easy setting, you will start with 7 villagers and won't be able to increase the population until the first hut is finished, unless one of your villagers dies first. The other game difficulty settings start you off with fewer than 7 villagers, so you'll be able to produce at least one baby before reaching a population of 7.
_________________________
Barbara
Unicorn
Last Day of Work