August 2018
@nickypezza10 First off, a female sim can't get pregnant, or even try, if she's about to age up. Also, the interaction "try for baby" may not show up unelss your two sims are being romantic and think that the other is being "extremely irresistible." (When it does show up, it's under romantic interactions, but sometimes there are too many available options for one list. In that case, you'll have to click "more..." to see the rest.) What happens when another sim of yours is active and you click on the bed? You should see the option to "try for baby," and selecting it should give you a list of eligible sims on the lot.
If none of this helps, you might want to delete your cache files in your TS3 game folder in Documents. The five files are:
CASPartCache.package
compositorCache.package
scriptCache.package
simCompositorCache.package
socialCache.package
These are always safe to delete, and they will regenerate each time you load the game.
The other thing you can try is evicting your sims, saving their house to the bin, bulldozing the lot and replacing it, and then moving the sims back in. If you do it in one Edit Town session without saving the sims themselves to the bin, they'll retain their jobs and relationships but lose their promised wishes and opportunities.
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I don't work for EA. I'm just trying to help fellow players with their games.