What problems should be paid attention to in safe period contraception?

Women of normal childbearing age have menstruation once a month, from the beginning of this menstruation to the first day of the next menstruation, which is called a menstrual cycle. From the perspective of contraception, each menstrual cycle of women can be divided into menstrual period, ovulation period and safe period. Generally speaking, the ovaries of women of normal childbearing age produce only one egg a month. The egg can survive for 1-2 days after ovulation, and the sperm can survive for 2-3 days in the female reproductive tract. The fertilization ability is mostly within 24 hours after ovulation, and the sperm loses the ability to combine with the egg after 2-3 days. Therefore, it is possible to get pregnant 2-3 days before ovulation and 1-2 days after ovulation. This period is called easy pregnancy or dangerous period. The date of ovulation in women is usually about 14 days before the next menstruation. To be on the safe side, we call the first 5 and 4 days of the ovulation day, together with the ovulation day, a total of 10 days as the ovulation period. The rest of the time except menstruation is called the safe period. The safety period is divided into pre-ovulation safety period and post-ovulation safety period from the day of clean menstruation to the day before the beginning of ovulation. The safe period after ovulation is from the first day after ovulation to the day before the next menstruation. The safe period after ovulation is safer than that before ovulation. This is because some women sometimes ovulate earlier due to environmental changes and mood swings dildo shop , so that the pre-ovulation safety period will be shortened, but they do not know it, so the pre-ovulation safety period is not safe. The chance for the ovary to ovulate twice in a menstrual cycle is very rare, that is, the second ovulation generally does not occur during the period from ovulation to the next menstrual cycle, so the safe period after ovulation is safer. The key to using safe period contraception is to determine the date of ovulation. Ovary ovulation, there is generally no special feeling, some women may have lower abdominal pain, low back pain ed vacuum pump , breast distension and emotional changes and other symptoms, but these phenomena are not unique symptoms of ovulation, so they can not be used as the basis for ovulation. Menstruation and ovulation change periodically bdsm chastity , and there is a close relationship between them. If you master the law of their changes, you can determine the date of ovulation by indirect methods. How to test the ovulation period? The first step to use safe period contraception is to accurately determine the ovulation period. At present, the three methods used to determine ovulation period have their own advantages and disadvantages: calendar method, basic body temperature measurement method and cervical mucus observation calendar method can be used to calculate ovulation period and safe period before and after ovulation. But it is only applicable to women with normal menstruation, sometimes ovulation is advanced or postponed due to environmental changes and mood changes, so it is not accurate. The method of measuring basic body temperature can determine the date of ovulation and the safe period after ovulation, but can not determine the safe period before ovulation in advance. This method is more troublesome and strict. If the body temperature is not measured in accordance with the regulations, the date of ovulation cannot be accurately determined. The cervical mucus observation method can determine the ovulation period and the safe period before and after ovulation, which is more correct, but the user must be trained and fully mastered before it can be used. If these three methods are combined, they can enhance their strengths and circumvent their weaknesses, and achieve greater results. At least one couple can master the method of determining the period of ovulation, and if they do not master this method, they cannot use safe period contraception. Safe period contraception is to stop sexual intercourse during ovulation, which requires the close cooperation of the man, otherwise it can not be used. Of course, it is also possible to use external contraceptives during ovulation. Why is safe period contraception not safe? Safe period contraception is a physiological method of contraception. Sex education is carried out in a normal state and can be satisfactorily sexy. Compared with other drugs, appliances, surgery and other methods, it has the advantages of natural, economic, practical and harmless, and is easier to be accepted by people. However, if it is not strictly mastered or improperly used, it is easy to lead to failure. The success of safe period contraception depends on the understanding of ovulation period. Without this knowledge, safety is out of the question. Some people in China have done a survey, there is a lack of correct understanding of safe period contraception, most of the people are still confused, do not know how to calculate the ovulation period, which is also one of the reasons for the low success rate of safe period contraception. In addition, the time of female ovulation, affected by the external environment, climate, my mood, and health status and other factors, ovulation can be delayed or advanced, and additional ovulation may occur. Therefore, the safe period can not be calculated accurately, so safe period contraception is not safe. Experts believe that the failure of safe period contraception is largely due to the lack of understanding of the rules of ovulation. It is urged that great efforts should be made to popularize the knowledge of ovulation rules and strengthen education. In the 1970s, according to the characteristics of periodic physiological changes in women's reproductive system, John and Evelyn Billings in Australia initiated the cervical mucus observation method to determine the ovulation period to guide contraception. This method is called "Billings natural contraception" and has been recommended by the World Health Organization. The accuracy of measuring ovulation period by Billings method is high, but because its method is very scientific, it requires users to have certain cultural knowledge and the correct guidance of professional and technical personnel. Users must be trained and fully mastered before they can use it. Therefore, it is difficult to master it. Because the method of safe period contraception is a kind of physiological contraception, it is only suitable for couples who have regular menstrual cycle big ass anal , regular life, long-term cohabitation, mutual cooperation and understanding, and are not suitable for those who have irregular menstrual cycle, couples who visit relatives and those who often change their living environment. For newlyweds, newlyweds, lovers, it is difficult to control the time of sexual life, it is also worth honeymoon travel, living environment changes, emotional excitement, ovulation period is more difficult to master, contraceptive failure is also "reasonable", so newlyweds are not suitable for this method of contraception.
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