Calendar-based methods are various methods of estimating a female human 's likelihood of fertility, based on a record of the length of previous menstrual cycles.

When to Start. Once trained, a woman or couple usually can begin using calendar-based methods at any time. Give clients who cannot start immediately another method to use until ...

While the World Health Organization classifies both symptoms-based and calendar-based methods as "fertility awareness", some teachers of symptoms-based methods do not consider ...

Medical Eligibility Criteria for Calendar -Based Methods. All women can use calendar-based methods. No medical conditions prevent the use of these methods, but some conditions can ...

Home: Health Topics: Birth Control: Fertility Awareness-Based Methods (FAMs) Calendar Method ... To prevent pregnancy, women can keep track of their menstrual cycles (The ...