Billings ovulation method

Billings ovulation method
Billings ovulation method
Background
Type	Behavioral
First use	developed in 1950s
Failure rates (first year)
Perfect use	0.5–3%
Typical use	1–22%
Usage
Reversibility	immediate
User reminders	Accurate teaching and daily charting are essential.
Clinic review	None
Advantages and disadvantages
STI protection	No
Period advantages	Prediction
Weight gain	No
Benefits	Low cost, no prerequisites for use, no side effects, can aid pregnancy achievement
Risks	Nil

The Billings ovulation method is a method in which women use their vaginal mucus to determine their fertility.^[3] It does not rely on the presence of ovulation, rather it identifies patterns of potential fertility and obvious infertility within the cycle, whatever its length. Effectiveness, however, is not very clear.^[3]

^ ^a ^b Cite error: The named reference Pal2009 was invoked but never defined (see the help page).
^ Cite error: The named reference Hat2007 was invoked but never defined (see the help page).
^ ^a ^b Poston, Dudley L. Jr.; Bouvier, Leon F. (2010). Population and Society: An Introduction to Demography. Cambridge University Press. p. 91. ISBN 9781139489386.

[Pal2009-1] Cite error: The named reference Pal2009 was invoked but never defined (see the help page).

[Hat2007-2] Cite error: The named reference Hat2007 was invoked but never defined (see the help page).

[Dub2010-3] Poston, Dudley L. Jr.; Bouvier, Leon F. (2010). Population and Society: An Introduction to Demography. Cambridge University Press. p. 91. ISBN 9781139489386.

[1]

[2]

[3]