The Billings Ovulation Method

The Billings Ovulation Method™ is used by millions of women around the world. It was developed by Drs John and Evelyn Billings, beginning in 1953, validated by eminent international scientists, and successfully trialed by the World Health Organization. By learning to identify their natural signals of fertility, women can use the Method, consisting of the application of four common sense guidelines, to become pregnant or avoid pregnancy and to safeguard their reproductive health.   

For further information on the science behind the Method, list of accredited teachers,  affiliated organizations around the world, teacher training workshops, internet instruction using the App Fertility Pinpoint,  trademarked authentic Billings materials, videos, audio visual presentations and e-books, please visit

The book, “The Billings Method” by Dr. Evelyn Billings is available in most libraries.  However, the help of an accredited teacher is indispensable especially at times of irregular cycles when ovulation is delayed: breastfeeding, post-partum, pre-menopause, recovering from extreme athletic and emotional stress. WOOMB International in the U.S.A. is

·       I helped a couple who had been trying to conceive for a whole year, with a history of irregular cycles, to achieve a pregnancy in their first attempt after a short instruction.
Santiago Gutierrez, M.D., ObGyn, Laredo, Texas



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SymptoPro by Northwest

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Cost: $125

If your schedule does not allow you to attend multiple live NFP classes, or if you and your fiancee or spouse live a great distance from each other, we offer an online NFP course which allows for greater flexibility! Please note that this class is for engaged or married couples and does include a certificate of completion.

Course Description:

You will receive personalized one-on-one support from a certified NFP Provider. Mary-Rose Verret is the main instructor for CMP's couples who would like to take this Online NFP Class. Mary Rose will be available to answer questions and provide personalized feedback. The timeline for completion is about a month, although you are given four (4) months of access to the online course.You may take up to four months to complete the course but you may not complete it in less than four weeks.
After the four months are up a couple can renew access to the course for $10 per month. Access to the class web charting App, and support from your instructor, is always free even after the class is complete.  
Once you register for the class online you will be sent, via priority mail, a package with everything you need to get started. The package includes: a slim textbook, a basal digital thermometer, charts and log in information for you to get started with your online NFP class.You will complete the course on an individualized self-paced basis, and all information-sharing is completely confidential. The course is divided into 3 sessions, taken roughly 2 weeks apart to allow time to begin charting. Your teacher will be monitoring your progress through the course to double check your understanding, review your charting, and to be available for questions. Once the course is complete, chart review with your teacher continues through the first 6 months of charting. Teacher contact occurs typically via email, but may also occur via phone if requested.

If during any given month the demand for this class is too high, couples will be assigned to another personal NFP Provider who will be equally certified.

About Natural Family Planning 

No longer “guess work,” Natural Family Planning (NFP) is an effective, scientifically based method of family planning that treats fertility as a normal, healthy process. Northwest Family Services teaches the Sympto-Thermal Method which is based on changes in a woman’s cervical mucus, waking or resting temperature, and cervix. These observable signs change in response to the hormones of the menstrual cycle. It only takes seconds a day for a woman to track her fertility; then the couple interprets the chart and makes a decision based on their family planning intention. NFP works through periodic abstinence during the method-defined fertile time for couples who are avoiding a pregnancy. NFP can be used effectively throughout a woman’s entire reproductive life. Regular cycles are NOT required. NFP is NOT Calendar Rhythm. The SymptoPro by Northwest NFP System, is based on the research of Dr. Josef Roetzer and is used throughout the U.S.

Does it work?
It can be highly effective for couples who are avoiding or achieving a pregnancy. Couples who are taught well, understand the method, are clear about their family planning intention, and carefully follow all the rules for avoiding a pregnancy all the time will experience a 98 to 99.9 percent effectiveness rate. Couples who occasionally do not follow all the rules for avoiding a pregnancy will most likely experience a pregnancy rate similar to condoms and other barrier methods of family planning.

Who can use NFP?
Couples who want to share responsibility for family planning
Couples who are avoiding a pregnancy
Couples who are trying to achieve a pregnancy
Women who want to understand their menstrual cycle
Women during all phases of their reproductive life: typical, long, or short cycles, after childbirth and discontinuation of hormonal contraception, while breastfeeding, and during premenopause

Low cost
No harmful side effects
Highly effective for avoiding or achieving a pregnancy
Marriage enrichment and mutual understanding
Morally acceptable by all religious faiths
Self understanding
Appreciation of fertility and children
Fosters respect for and acceptance of the total person.


Meet Your Instructor 

Mary-Rose Verret is a Marriage Educator and Certified Natural Family Planning Instructor in the SymptoPro Method. She is a certified Prepare-Enrich Facilitator and Instructor. Mary-Rose is currently the Director of Marriage and Family Life at St. Joseph Parish in Cecilia, LA. She has worked over eight years in Marriage Ministry for the Diocese of Arlington, Virginia,  the Diocese of Lafayette, Louisiana and St. Joseph Church.

During this time she has personally worked with hundreds of engaged and married couples, both one-on-one and in a conference setting. Mary-Rose speaks locally and nationally on the science and theology behind NFP, the science and history of birth control, and how to preach on NFP with clarity and compassion. Working with couples as they transition from chemical birth control to NFP is her main focus. She also works with couples who are dealing with marginal fertility and works to help them achieve pregnancy.

Mary-Rose has been interviewed by local media on the Catholic Church's teaching on Health Care Reform and numerous Marriage and Family Life issues. She and her husband Ryan appeared on EWTN's Life on the Rock to share how Catholic Marriage Prep Online prepared them for their marriage.

Mary-Rose and her husband Ryan have
three beautiful children, Azelie, Andre and Melodie. Both Mary-Rose and Ryan are passionate about sharing the joys of marriage and family life with couples who are preparing for the Sacrament of Marriage.

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N.F.P. Training Options and Resources


SymptoPro Online NFP Class and App by Northwest
 We have been providing quality Natural Family Planning education for over 25 years. Our classes are informative, personal, and discreet. Whether achieving, spacing, or avoiding a pregnancy, NFP is a highly effective method. More and more couples are discovering the joy of NFP, and in response, we now offer our course online. Purchase of our online course includes lifetime support from your Northwest NFP Provider at no extra charge as well as our new free web charting App that can be used to share your charts with your instructor for quick review.
SymptoPro by Northwest is a Sympto-Thermal Method of NFP and online class instruction takes 4 to 6 weeks to complete. Sympto-Thermal means physical symptoms and temperature are used to determine fertile and infertile times during a woman's cycle.
Class cost is $125 with a downloadable ebook or $150 with a textbook.
Both options include the free charting App and personalized instruction and feedback.

Read More

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.

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