For women who want to have a child, the number “35” seems to be almost magical. After all, it’s the age that people anecdotally agree upon as the point where a woman’s fertility begins to decrease. Yet that’s really not the “whole story”.
While female fertility does tend to wane faster after 35, there are many women who have trouble conceiving in their late 20s and early 30s. So for a woman, waiting until the “magic number” may not be the best idea.
Why are some women infertile before 35? There are a whole host of reasons, including:
- A pre-existing condition of the reproductive system, such as PCOS or endometriosis.
- A bout of cancer as a child, teen or young adult.
- An undiagnosed or diagnosed sexually transmitted disease (STD) like chlamydia.
- A problem with regular ovulation.
- The medications the woman is taking.
This is why most fertility specialists, like those at the Philadelphia area’s Reproductive Science Institute (RSI), recommend that women of any childbearing age not adopt a “wait for years” mentality. Typically, women should be able to become pregnant within six months of trying (e.g., having regular sex without protection.)
Whether you’re in your late 20s or your late 30s, you need to be aware of the facts. Will your fertility lessen as you age? Absolutely. But the numbers indicate that up to 7% of females are infertile by the time they reach their 30th birthdays. That’s why it’s critical to get assistance and medical advice sooner rather than later.

