Listings 1 - 2 of 2 found in "Rhythm Method":
Offers an article about natural family planning or periodic abstinence. Includes several ways to approach predicting fertile days.
http://www.drdonnica.com/display.asp?article=4122
Provides information about this birth control method. Includes the failure rate and a STDs.
http://kidshealth.org/teen/sexual_health/contraception/contraception_rhythm.html
Pages: 1