Covers the Billings Ovulation Method of natural family planning, research papers and teaching material, identifies teaching locations other countries.
Billings Ovulation Method Association
Information about this method and access to instructors who assist couples achieve future conception.
Family of the Americas
Discusses natural family planning through the ovulation method.
Fertility Awareness Center
Non-profit group providing information on the method and steps to learn fertility awareness from a non-religious perspective.
Fertility calculator gives daily estimates based on menstrual cycle.
Swiss organization offering support and information on the Sympto-thermal method.
National Association of the Ovulation Method of Ireland
Helps women learn how to manage their own fertility through monitoring body changes. Includes details of the Billings method of self-examination.
Natural Conception Control
The Dr. Eugen Jonas method. Provides details on how to use observations of natural cycles to accomplish contraception or to select a future baby's gender.
Natural Fertility of New Zealand
Teaches natural fertility awareness for couples trying to conceive or trying to avoid pregnancy.
The NFP Files
Collection of FAQs, articles, links, resources, and organizations that explain natural family planning as an alternative to contraception, sterilization and abortifacients.
Twin Cities Natural Family Planning Center
Information on Ovulation Method, human fertility cycles, and other non-chemical approaches to family planning.