American Congress of Obstetricians and Gynecologists (ACOG) is a nonprofit organization of professionals who provide health care for women, including teens. The ACOG Resource Center publishes manuals and patient education materials. The Web publications section of the site has patient education pamphlets on many women's health topics, including reproductive health, breast-feeding, violence, and quitting smoking.

This Web site provides information about emergency contraception. This includes the correct use, effectiveness, and expected side effects of emergency contraception, along with how regular contraceptive pills can be used for emergency contraception. The Web site is operated by the Office of Population Research at Princeton University and by the Association of Reproductive Health Professionals.

A searchable database of emergency contraceptive providers in the United States is also available.

The National Women's Health Information Center (NWHIC) is a service of the U.S. Department of Health and Human Services Office on Women's Health. NWHIC provides women's health information to a variety of audiences, including consumers, health professionals, and researchers.

The Planned Parenthood Federation of American provides comprehensive reproductive health care and consumer information about family planning, sexual health, and sexually transmitted diseases (STDs).

The Teen Talk Web site (www.plannedparenthood.org/teen-talk) has information for teens about dating, teen pregnancy, sexual orientation, gender identity, how teens can protect themselves against STDs, and more.

This Web site of the World Health Organization (WHO) features links to related sites, fact sheets, and publications with information on contraception and family planning.