Also called natural family planning, this method of birth control requires having sex only during times of the menstrual cycle when the woman is not fertile. During times when pregnancy would be possible, periodic abstinence is employed. For fertility awareness to be effective, the practitioner must understand and respect the perimeters of her fertility.  Fertility awareness often involves  three different ways for calculating fertility: the calendar method, the mucus method, and the temperature method. Used together, these three methods are very effective at determining exactly when a woman is fertile. The calendar method requires tracking the different phases of the menstrual cycle on a calendar, then noticing patterns over time and using the patterns to predict when ovulation will occur.     The mucus method involves checking vaginal mucus, which changes in color and consistency when a woman is fertile.     The temperature method involves checking the body's basal temperature every day and noticing when it goes up a few tenths of degree, which signals that ovulation has occurred.     The downside of fertility awareness is that it requires a lot of time and attention. If you forget to check mucus or temperature for a few days, you may miscalculate the days during which sex should be avoided. The upside of fertility awareness is that it its completely natural, requiring almost no money, no outside hormones, and no uncomfortable devices.
الوعي بالخصوبة.