Health encyclopaedia - Alphabetical Topic List健康百科全书-按字母顺序排列的主题清单

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How does it work?它如何工作？ of Natural family planning自然计划生育

For each menstrual cycle, a woman is fertile for only 24 hours.  However, because sperm can live inside the body for up to a week, the actual fertility period is around eight or nine days.  An egg is released about 12 to 16 days before the woman’s next period.为每个月经周期，一名女子是肥沃的土壤，只有24小时，但因为精子可以活身体内长达一个星期，实际的生育期大约是8或9天。鸡蛋是释放约12至16天前该womanâ € ™ s今后一个时期。

The fertility period is worked out by keeping a diary of body temperature (which rises slightly after ovulation – the period when an egg is released from the ovaries into the fallopian tubes), cervical secretions (discharge becomes clear, like egg white) and the length of menstruation, over several months.  The woman must then avoid sexual intercourse during the fertile times to avoid pregnancy.生育期间的工作是由一本日记保持体温（略有上升后，排卵â € “期间，当一个鸡蛋是释放出的卵巢进入输卵管） ，宫颈分泌物（放电变得清晰，像蛋清）和长度月经，过去数个月，该女子便要避免性交，在肥沃的时代，以避免怀孕。

Women who have recently given birth may not need to use any form of contraception.  For this to be effective the woman must have had a baby less than six months ago, be fully breastfeeding (not feeding the baby in any other way), and not be having any periods.妇女谁也刚分娩可能不需要使用任何形式的避孕措施。这是有效的该名女子必须有一名婴儿少于6个月前，完全母乳喂养（不喂食婴儿以任何其他方式） ，而不是可有任何时期。