In a nutshell, the older a woman is, the harder it will be for her to conceive.
A woman’s eggs have an expiration date—only most people don’t know that or what it means. To date, there has been a lack of education around this topic; women have not been made aware of this fact, by their doctors or others. A woman is born with all of her eggs. They are depleted over the course of her lifetime, and their quality diminishes as the years go by.
By the time she reaches 35, her egg reserves decline dramatically.