What is the statistics of pregnancy while using the rhythm method?
Rhythm method belongs to natural family planning, which, though used in all the times, has never been as popular as other contraceptive methods. Statistics says that only 1% of American women relied on it in 80th of the previous century. Often called “Calendar method”, this way of pregnancy protection is based, similarly to any other natural planning methods, on fertility awareness. That means that a woman should perfectly know her menstrual cycles, which consist of fertile and infertile days, and avoid sexual relationships at the times when she is most likely to get pregnant. Rhythm method is based on three ideas. First of all, it is considered to be a rule that a woman ovulates fourteen days prior to her periods; secondly, sperm is said to be viable for three days; and thirdly, female egg can be fertilized up to 24 hours after its release from the ovaries. Hermann Knaus from Austria and Kyusaku Ogino, a Japanese gynecologist, were the first to develop rhythm method at the beginning o
