The likelihood of producing children decreases gradually as the peeps age. Nobody has reported a mom making a new baby after age 50, although there have been several reports of 50-year-olds producing a baby.
I keep seeing posts that say that women don't have babies over the age of 50 but that was not the case with one of my families. I had a woman who had 5 kids and I thought she was through because I kept putting her and her husband together and *nothing*. Then one day she popped one out. She was 54. I never used the baby boost on her either because I didn't want to spend 500.00 on a shot.
I remember thinking that she was the same age as me. 54.
Her husband died a few years later leaving mom and son alone. I sent mom to her sisters and started a new generation.