The first visit to a gynecologist should be at the age of 12 or 13. This is not for an exam but rather an educational session to discuss menstruation and becoming a woman. Primary care physicians are also advised to encourage vaccinations for the human papillomavirus (HPV) in girls that are 11 or 12. By age 18 a woman should have her second gynecological visit to discuss sexual behavior, contraception, and STDs. Polycystic ovarian syndrome (PCOS) can be common in young woman and can cause an abnormality the uterine lining so it is important to get this checked out as well. If a woman becomes sexually active in this age range she should get a pap smear and STD test soon after she becomes sexually active.
More: HPV Fact Sheet