I've found one of the most tedious types of mods to work on is anything pregnancy-related, because for testing I had to get the sim pregnant and then high-speed the game until he/she/whatever started showing and got to the stage I need to see. I'm looking into possible ways to make a fix, but you can use the Pregnancy Controller to get your sim back to normal: Select the sim, click on any other sim, and click : End Pregnancy. This is caused by a change in the game Give Birth at Home code, not by the Pregnancy Controller.
Note: There is a problem with male sims giving birth at home and then remaining with their only option being 'Go to Hospital'. If you're having problems with it, please report what specifically is going wrong in your game. It is NOT compatible with previous game patch versions.
Version 5 should be fully compatible with patches 1.63, 1.66, and 1.67 according to my tests.
