cats not having kittens

Hey there everyone!

So I have been working on my play-through of the cats and dogs expansion pack recently and I'm having an issue. My cat had become pregnant with the notification popping up saying kittens are on the way. A bit later a notification saying my cat was going into labor, so I was really keeping watch of her. She's moving slow, breathing heavy, and all that jazz. It has now been about three days of game time and my cat is still like this. She still has yet to give birth to the kittens. I am not sure what happened but I don't feel that a cat's labor should be over 3 days long. I have already tried repairing my game as well and that did not work. 

If anyone can give some helpful advice would be much appreciated as I want to see these cute kittens soon!

Thank you!