In the sims 4 game, only young adults are allowed to have pregnancy traits. Restart the game and enjoy the new mods.Launch the game and go to the settings > Options > Game Options.Default location : My Document > Electronic Arts > The Sims 4 > Mods.Copy the content of the mod folder to the sims 4 Mod directory.Extract the content of the mod folder in your PC.Download your favorite sims 4 Pregnancy mod.