itch.io

It can hold as many as the amount of girls that can get pregnant.
One kid per mother, and the current list of girls that can get pregnant is 10.

So they're staying as babies for more than a week... weird.
Check if you disabled the pregnancy content in Preferences.

Otherwise, your savegame might've gone bonkers.

I'd suggest joining the discord for easier and faster support.
Link on top of the page.