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Postcoital contraception includes the methods used to prevent pregnancy taken after sexual intercourse. Theses are urgent measures which include combination oral contraceptives, high dose estrogens, danazol, and IUDs. The effectiveness of this method is very high but it causes serious hormonal changes and can not be used often. This method should be used during 72 hours after the unprotected sexual intercourse and supported by taking pills later. The data indicate that the earlier the hormone medication is taken, the less likely a subsequent pregnancy. Physicians state that good informing about the postcoital contraception could reduce the number of abortion in many times. There is a separate group of contraception methods which stands apart from the others as it requires not medication or physical interference or surgery. These are so called natural family planning methods. They include Monitoring Basal Body Temperature, Cervical Mucus Method, Home Monitoring System and some others. Monitoring Basal Body Temperature method is based on the fact that basal body temperature of the woman depends on the hormonal fluctuations and that the time of ovulation can be defined by this temperature to predict the fertile phase and abstain at that time. By studying the temperature patterns after a few months, couples can begin to anticipate ovulation and plan their sexual activity accordingly. Another very popular natural planning method is called the Calendar Method. This method helps to predict the ovulation and "unsafe days" when the possibility to get pregnant is very high by counting ovulation to occur 14 days before the onset of a period. Natural family planning methods not always give the high protections and decrease the spontaneity of the relationship but from the other hand they don't affect health and physical and mental activities. These methods are available for the people who don't perceive the other methods following religious or cultural traditions.