sims cannot try for baby or woohoo

I've had this problem for a few weeks. My sims cannot successfully try for a baby. I tried using the even on key line lot trait and fertility massages. every time my Sims tries for a baby it says unsuccessful. I've attempted this with multiple households and it doesn't work with any. I've also noticed the woohoo option is not available even with 100 love and friendship. I had the UI extension mod in my game (the only mod I was using) I removed the mod and repaired the game. the option still hasn't came back. any help or feedback would be appreciated.