Fertility Naturally Declines With Age. However, There’s No “Best Age” To Get Pregnant. The Decision Of Having A Baby Should Be Based On Multiple Factors – Including Your Age And Your Readiness To Be A Parent. Women Are Most Fertile And Have The Best Chance Of Getting Pregnant In Their 20s. Fertility Gradually Begins To Decline At Around Age 32. After Age 35, That Decline Speeds Up. There’s A Steep Decline In A Woman’s Ability To Get Pregnant Naturally In Her 40s. Most Women In Their 40s Can Still Have A Healthy Pregnancy And Baby, But The Risks Increase Significantly During This Time.