I'm trying to get one of my couples to try for another baby. They had one yesterday and I left until today to try for the next. Yesterday's baby is 5 now, and today, every time I try to make them have another baby, it just says it's too soon for them to do it again. Even the first time today that I tried, they wouldn't attempt it.

I'm used to having to wait until the last baby is about 3 years old or so, but it's gone well past that age. Is something wrong?