Cant have more than 7 Sims in household

I have 7 sims (4 sims and 3 pets) and my game tells me i can't try for a baby because my household is full. It has been a problem for a couple of weeks, nothing changed with the new update. 

Hi, I currently have 7 sims (5 sims and a dog and a cat) in my household and I want to let my cat have a kitten but it says that my household is too big... I checked multiple times, no one is pregnant so I think it's a bug. Anyone else having the same problem?

Says I can’t adopt or try for a new baby because my household is too big. Been like this for a few months. Only have 7 sims 

Looks like there’s already an “under investigation” bug report here if you want to upvote it:

Cant have more than 7 Sims in household | EA Forums - 5035328