A normal pregnancy in The Sims 4 lasts three days Sims, so that shortly you have patience you can have it. Also, during this period, your Sim will behave in a unique way, which makes the game different and more fun.
If despite this you want to advance your Sim's pregnancy in The Sims 4 you have to do the following. The first thing is to activate the tricks by typing 'testingcheats on'. Once you have done so, the game will understand that you want to alter some of its parameters, in this case, the gestation speed. To achieve this write: Sims.add_buff buff_pregnancy_inlabor.
