It’s true that a woman’s fertility peaks around age 30; after your late 20s, your fertility (along with your odds of becoming pregnant) begins to decline, decreasing more sharply after 40. If you’re in your fertility prime, don’t be alarmed if you don’t get pregnant as soon as you start trying. According to the American Society for Reproductive Medicine, a healthy, fertile, 30-year-old woman has only a 1 in 5 chance of getting pregnant in each month that she tries to conceive, so keep at it! Once you’ve been trying unsuccessfully for a year (the point when most experts will diagnose “infertility”), be aware that you’re not alone: 10 to 15% of childless American couples meet the criteria for an infertility diagnosis. See a fertility specialist for help.