What is Billings Ovulation Method?

BM is an entirely new method of Family Planning. It does not make use of a thermometer or calendar and is not the same as the Rhythm Method or the old safe Period method.
BM does not involve the use of a pill, coil, condom or withdrawal.

How does BM works then? BM teaches a woman to recognize in her body one sign which tells her clearly and without doubt her ovulation is coming soon. This is called the mucus sign.
The mucus sign is the only sign used in BM. The woman learns to recognize that sign in order to achieve or avoid pregnancy. Once a woman can discern the time of her ovulation and master its significance, she is able to control her fertility.