The Billings Ovulation Method is a simple yet scientific method of Natural Family Planning. Ongoing research has been conducted in Australia, Sweden and Spain since it was developed over 50 years ago by physicians John and Lyn Billings of Melbourne, Australia.

Couples using the Billings Ovulation Method track the woman's natural and unique signs of fertility and infertility each day. Based on the primary observation of sensation, four simple rules are applied within the woman's cycle (the first three rules are used before ovulation and the fourth rule is applied once the fertile phase is over) based on a couple's desire to achieve or postpone pregnancy.

As published in numerous journals including, Lancet, Contraception, Fertility and Sterility, British Medical Journal, American Journal of Obstetrics and Gynecology as well as by the World Health Organization, the Billings Ovulation Method is 99.5% percent effective in postponing pregnancy, providing couples follow the guidelines correctly.

To learn more, please explore our web site or visit www.woomb.org for more of the scientific basis behind the Billings Ovulation Method.  A sampling of effectiveness studies can be found on: http://www.woomb.org/bom/trials/indes.html