The "golden age" for getting pregnant is generally considered to be before the age of 30. While the term "golden age" is not typically used in this specific medical context, research consistently shows that women are most fertile and have the highest chance of conception during their twenties.
Fertility and Age: A Closer Look
Several sources confirm that fertility begins to decline after age 30, decreasing more significantly after age 35. By age 40, a woman's fertility is approximately half of what it was in her twenties. [Source: In general: women are most fertile before the age of 30; after 30, women's fertility starts to decrease; after 35 fertility declines more significantly; by 40, a woman's fertility is about half the level it was before she was 30. A study compared women's ability to conceive, in different age groups.30-Aug-2018]. This is due to a natural decrease in the number and quality of eggs.
This is further supported by information from Healthline: "Women are most fertile and have the best chance of getting pregnant in their 20s." [Source: https://www.healthline.com/health/pregnancy/best-age-to-get-pregnant]
It's important to note that the term "golden age" is also sometimes used to refer to the second trimester of pregnancy, which is often described as a more comfortable period due to the lessening of early pregnancy symptoms. [Source: https://www.ucsfhealth.org/conditions/pregnancy; https://www.texashealth.org/Health-and-Wellness/Women-and-Infants/Second-Trimester-Welcome-to-the-Golden-Period] This, however, is distinct from the optimal age for conception.
Conclusion
While the "golden age" of pregnancy can refer to the second trimester's relative comfort, the most fertile period for conception is generally considered to be during a woman's twenties. Therefore, planning a pregnancy before the age of 30 offers the highest chance of success.