It depends if you are concentrating on the word of man or the word of God. Miss Brown, who my mother knew got married at 39 and she had three children, she eventually divorced her husband after 15 years of marriage and she married another man, however she was living in Guyana, another woman got married at 43, had her first child at 45 and she went on to have four other children. It really depends how you are living your life. Ideally it would be nice to get married young, but everyone is different. A lot of people take drugs, drink heavily in their teens and 20s and what is that doing to your body, destroying your eggs. Another woman who was married for 20 years, she never had children, she divorced her husband, she married a man who was nine years younger, she adopted a baby boy and the following years she had a healthy baby boy, at the age of 47 and when she was 52 she had healthy twins a boy and a child.
If you go to places like Hawaii and Japan, the women eat a healthy diet and they are fertile up to when they are 60 years old and many have older births. The diets in Western Europe and America is not very good. So everyone is different.