Solved
Missing Triplets
I managed to have triplets for the first time in the hospital with my new sims family. When the parents returned home I immediately went into build mode to bulldoze the lot so I could get a bigger ho...
@flartsnart That happened to me once, when I moved a sim household with a baby to another lot. The baby got moved to the Household Inventory. I think I could drag it out of there, but I decided to load a previous save instead (and age up the baby to a toddler before moving).
