Generally speaking, over the course of each menstrual cycle, cervical mucus changes in predictable ways.

Right before the time of ovulation, the mucus becomes stretchy and clear which means “very fertile.

After ovulation, cervical mucus is affected byprogesteroneand becomes thick, sticky, and opaque.

Pregnancy test on top of a calendar

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To effectively use this method, you would make daily recordings of the sensation of your cervical mucus.

describing the sensation and appearance on a daily chart.

BOM doesnt require any form of rhythm counting, temperature taking,hormonal drugs, or devices.

It allows couples to share in the responsibility of natural family planning but requires cooperation and careful observation.

It’s also sometimes chosen for religious reasons.

The Billings Ovulation Method is best learned with support from an accredited instructor.

When Can’t the Billings Ovulation Method Be Used?

It is essential to have accurate knowledge and training of this method before relying on it to prevent pregnancy.

It’s important to note that your physician may not be familiar with this method.

Effectiveness

The research varies on the effectiveness of using the Billings Ovulation Method to prevent a pregnancy.

Understanding how the method works is important to the success of either achieving or preventing a pregnancy.

This method can be used to help prevent pregnancy and to predict ovulation when someone wishes to conceive.

Ultimately, there is no one “best” method of family planning.

MedlinePlus.Pregnancy - identifying fertile days.

University of North Carolina Medical School.Cervical mucus monitoring.

Billings Life.The 4 simple rules of the Billings Ovulation Method.

2017;46(4):e129e137.

doi:10.1016/j.jogn.2017.03.010

FACTS: Fertility Appreciation Collaborative to Teach the Science.Billings Ovulation Method.

Planned Parenthood.What’s the cervical mucus method of FAMs?

In: Cason P, Cwiak C, Edelman A, et al, eds.Contraceptive Technology.

Jones & Bartlett Learning; 2023:130131.

Billings Life.How Does the Billings Ovulation Method Work?