Pregnancy glitches?
I just started playing The Sims 4, and in my current game, I encountered a couple glitches related to the mother's pregnancies.
First, the mother was in the second trimester, and apparently got pregnant again. The toilet offered the pregnancy test, and then another pacifier icon appeared. She had one pacifier icon for being in her second trimester, and another for discovering that she's pregnant. Eventually, they became third trimester and second trimester. When the third trimester icon started its countdown, I was curious what would happen. The baby just disappeared, leaving her with only the pacifier icon for the second trimester pregnancy. I assumed that the system noticed the second pacifier icon and reset so only the second trimester pregnancy was valid, ignoring the earlier one.
Later, another pregnancy started its countdown for the birth, while the family already had a baby in the bassinet (the same one that was given to them automatically when the first baby was born). I wondered whether they'd be given another bassinet, or if they'd have to buy one. But again, the baby just disappeared. I assumed the game doesn't support 2 babies at the same time, but some online searches indicated that it is supported.
I don't really have a save for either of these glitches. The game has moved on quite a bit since either of them happened.