My sim keeps throwing up!?

I have Sims 2 with Nightlife and Celebration Stuff expansion packs (Not sure if it matters, but anyway...). I'm playing the "Broke" family and the mom has two boys but no husband. She keeps throwing up, and whenever she does she has a thought bubble that has a pacifier with a question mark next to it. I have no idea what this means, and I'm pretty sure she isn't sick, since she hasn't eaten any rotten food and the game hasn't told me she's sick, and I'm sure she isn't pregnant since her husband died.