Vanilla Sims 4 pregnancy is fine for five minutes. After that you notice the morning-sickness animation loops twice and the belly overlay is basically a beach ball. If you want your pregnancy storylines to actually feel like something — morning sickness that changes how your sim moves, a maternity wardrobe that doesn't cap out at three recolored tees, or a belly mesh that grows in more than two stages — you need mods.
This collection pulls together the pregnancy and maternity CC we keep coming back to. Gameplay tweaks like Lumpinou's RPO expansion and MC Command Center get most of the attention, but the maternity wardrobe picks are where the collection really earns its place. Belly overlays from creators like NoirSims and Elza rework what pregnancy actually looks like on a sim, and the maternity dresses pull from MM and alpha creators so you can stay in whatever art style you already build around.
Everything here is filtered to Sims 4 only, checked for a working download link, and skipped if it's flagged NSFW. Sort by downloads if you want the mods everyone already trusts, or scroll for the smaller finds that the big listicles miss.