The American College of Obstetrics and Gynecologists (ACOG) has changed it's recommendation for the onset and frequency of Pap smears for women. Until this week, medical guidelines have called for women to get annual Pap smears, which check for cervical cancer and other cervical and reproductive abnormalities, beginning no later than three years after becoming sexually active, or at age 21 (whichever comes first). more ›