If you downloaded the mod more than 5 hours ago, it's probably running the version where the determine pregnancy function isn't working properly.
Otherwise, I'm assuming you got or gave someone else a creampie and there's no data on your/their page indicating that they're pregnant?
If you don't see that then cheat add money and buy as many fert ups & veril ups as possible (like 30 of them) and consume them all and then try for a baby just to test and see if it actually works. Send me the save file after you've chugged, then another after you got pregnant. It would be best to message me on discord