R照比林斯方法规则

早期规则(排卵前期的几天)

• 第一条 – 月经期多量出血时不要同房。
  [Ovulation might occur quite early in the cycle and menstrual
  bleeding could obscure mucus.]

• 第二条 – 如已明确为不孕期(基本不孕型)，可在隔天夜间同房。
  [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. ]

• 第三条 – 基本不孕型时如出现分泌物或出血，不应同房。须待恢复基本不孕型三天后(第四天晚)才可同房。其口诀为“等等看，1，2，3”。
  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.]

峰日规则:

• 峰日后第四天起每天都可同房，一直到周期之末。
  [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.]

为获得妊娠

使用“早期规则”。

推迟同房至滑溜粘液出现时。

这几天最易受孕，即集中在有明显滑溜粘液时和在峰日后一到两天内同房。

达到避孕目的: 第1-4条