Billings Ovulation Method

Billings Ovulation Method® (BOM) is based on a woman’s daily observations of cervical fluid, mucus, and the sensation of the cervical fluid. When the cervical fluid is detected and sensed, the decision is made to determine if she may be fertile. Throughout a woman’s cycle, four rules are applied (three prior to ovulation and the fourth rule after the fertile phase ends). These rules are applied based on a couple’s desire to achieve or postpone pregnancy. Women should attend classes or receive instruction from a trained and certified educator to ensure accuracy in using the method to achieve or postpone pregnancy.

Average Cost

Teachers often will charge a package price that includes all materials and follow-ups. Generally, it is about $135, but can be less or more depending on the teacher.

Class/Instruction Format

A certified teacher will meet with you in person or online training and show you a PowerPoint presentation that reviews the Billings Method™, including the basic science behind it, the four simple rules and how to chart your patterns of fertility and infertility. At that point, you will begin your own chart and two weeks later will meet with the teacher either in person or remotely to review your charting so far. Most couples will meet with a teacher for four to six follow-ups to gain confidence and to insure accuracy.

Contact a Billings Teacher

Find a remote instructor here:

Basic Overview of the Billings Ovulation Method

Note: contact information at the end of video is not local.

Comprehensive Overview of the Billings Ovulation Method


Fertility Pinpoint™ – official Billings charting system

NFP Charting Online – approved as an authentic app for Billings

“[Fertility awareness] is knowledge of her body that every woman ought to have.”
Dr. Evelyn Billings

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