Women are born with all the eggs they will ever have. As a woman ages, her eggs age with her, diminishing in quantity and quality. Age is not something we can control. But if you want a baby or another baby, and you’re in a relationship, you can have a conversation with your partner sooner rather than later. The father’s age can also impact on chance of conception. Time to pregnancy, risk of miscarriage and the health of the child. Chances of getting pregnant without IVF. Starting at about age 32, a woman’s chances of conceiving decrease gradually but significantly. From age 35, the fertility decline speeds up. By age 40, fertility has fallen by half. At 30, the chance of conceiving per cycle is about 20%. At 40 it’s around 5%. As a woman ages, it takes longer to conceive and the risk of not being able to get pregnant increases. Also, the risk of miscarriage, and complications in pregnancy and childbirth, increase.