Rules of the Billings Method
Early Day Rules (rules for the
Rule 1 – avoid intercourse on
days of heavy bleeding during menstruation.
[Ovulation might occur quite early in the cycle and menstrual
bleeding could obscure mucus.]
Rule 2 – Alternate evenings are
available for intercourse when these days have been recognized
as infertile. (Basic Infertile Pattern (BIP) )
[Evenings are recommended for intercourse during the BIP
as the woman needs to be in an upright position for a few hours
for cervical mucus to make its presence felt at the vulva. Seminal
fluid on the day following intercourse could obscure the mucus.
It is important to allow time for the seminal fluid to disappear
and to confirm the BIP is still present by avoiding intercourse
on consecutive evenings. ]
Rule 3 – Avoid intercourse on
any day of discharge or bleeding which interrupts the Basic
Infertile Pattern. Allow 3 days of the Basic Infertile Pattern
afterwards before intercourse is resumed on the fourth evening.
Rule 2 continues.
[Waiting will enable the woman to either recognise the Peak
in which case the Peak Rule is used; or, when the change is
an interruption of the BIP caused by raised oestrogens, the
hormonal level will return to a basic low level and the woman
will recognise a return of the BIP. She counts 3 days to enable
the hormones to stabilise before resuming intercourse applying
Early Day Rule 2.]
The Peak Rule (Rule 4):
From the beginning of the fourth
day following the Peak until the end of the cycle, intercourse
is available every day at any time.
[Ovulation occurs on the Peak Day or days 1 or 2 following
the Peak. The egg will live for 12-24 hours
unless fertilised. The third day after the Peak is to allow
for the life time of the egg. From the fourth day after the
Peak the woman is infertile until the end of the cycle and intercourse
is available at any time.]
To Achieve a Pregnancy
Apply the Early Day Rules.
Postpone intercourse until the slippery sensation occurs.
Intercourse should occur over the time of the slippery sensation
and for one or two days after.
For the Postponement of Pregnancy: Rules 1-4
JABFM – Online Survey
The Performance of Fertility Awareness-based Method Apps Marketed to Avoid Pregnancy; JABFM July–August 2016 Vol. 29 No. 4 pp. 508-511. Introduction: In recent years there has been an explosion in the development of medical apps, with more than 40,000 apps now available. Nearly 100 apps allow women to track their fertility and menstrual cycles and can be used to avoid or achieve pregnancy…
Read the full article here »