Can anyone recommend a realistic childbirth mod that is safe to install?

@LadyZaomee I don't use a childbirth, but I report on mod status, so I can speak to your concerns.

PandaSama's Childbirth Mod is well maintained and have never had reported virus issues. In fact, hers just updated (I'm still putting the report together - modders have been busy today!). Hers is the one you'll see a lot of streamers using. Her download site is her Patreon page; don't download it from a third party.