Pregnant but not pregnant?

[NutNut]

So I have 3 warthogs. 2 females and a male. All very happy and not family related.
I have several times gotten notifications about pregnancies but neither females are showing as pregnant and no babies appear!

Anyone else with this issue ??

I have other animals getting preggo and having babies. Only have problems with the warthogs atm.

 

[Cile]

I had this issue with one of my tigers a while back, I have not had the issue again, idk if what I did helped fix it or anything but, instinctively once i noticed it happening i put my tiger in the trade centre and then saved my game and and exited the game completely and then loaded my game back up and put my tiger back into it's enclosure, and its been fine since, not sure why it happened or how, but maybe you could try this method and see if it helps?