Different models of NFP have been developed based upon observation of specific signs of fertility. To learn about each method, click on the links to the provider’s site below. If you’re just introduced to NFP a Method Matcher may be helpful.
Cervical Fluid-only methods or ovulation methods are probably the most widely used. They work well for women who prefer to focus on one sign.
Sympto-thermal methods chart multiple signs: typically mucus, basal body temperature, and position of the cervix. These models work well for women who like the confirmation of more than one sign.
Sympto-hormonal methods detect the production of key fertility hormones with simple at-home urine tests and cross check it with mucus observations.