In the last 30 years, fertility rates for women age 20 to 24 has declined by 43% while first-time motherhood between the ages of 35 to 39 has increased by 67% [1] Fertility Rates: Declined for ...

Fertility peaks between the late teens and 20s, when women have an 85% chance of conceiving within a year. By age 30, that percentage drops to 75. At 40, it's sunk to 44%. "Aging eggs are not your ...