Many friends of both genders are aware of the use of contraception during the menstrual period, so some friends of both genders can have sex without using any external force during the safe period. During the safe period, sex can also achieve contraceptive effects, but it may not always be successful. Some female friends may also be "caught". So, what factors are causing the failure of contraception during the safe period, let's follow the editor to take a look!
Several reasons for contraceptive failure
According to statistics, the success rate of contraception during the physiological period is about 70-80%. Because the cycle of female ovarian ovulation is regulated by hormones, and hormone secretion is easily influenced by multiple factors.
External factors such as travel, environmental changes, climate change, and events may cause certain stimuli to the human body, affect hormone secretion, and lead to premature or delayed ovulation.
Self factors such as illness, mental stress, emotional excitement, depression, etc. may shorten or prolong the menstrual cycle. In addition, sexual activity can also stimulate ovulation. When a woman is excited, the hormone levels in her body undergo strange changes. If sperm signals enter, the ovaries may secrete additional eggs, and sperm can find binding targets.
Calculation method: In addition, if the calculation of ovulation date is incorrect or if the ovulation test method is not mastered, contraception is prone to failure. At present, calendar method, basal body temperature method and cervical mucus observation method are used to measure ovulation period. Each of these three methods has its advantages and disadvantages. The combination of the three methods requires correct training.
Some misconceptions about contraception
Physiological contraception is only applicable to couples with regular menstrual cycles, long-term cohabitation, lifestyle patterns, and mutual understanding, but its safety is not high. Women who use this method of contraception should pay attention to the following points:
Many diseases change the ovulation time of women, such as endocrine diseases and kidney diseases. If safe period contraception is used during this period, the failure of contraception during physiological day cohabitation generally does not lead to pregnancy, but there is a possibility of accidental ovulation during physiological day cohabitation, which can easily lead to infection. There are harmful and unprofitable physiological day cohabitations for women of age who have a small amount of vaginal bleeding. They can cohabit on the 4th day after the bleeding stops. Because this bleeding may be due to ovulation, if you switch from oral contraception to physiological contraception, there may be additional ovulation and irregular physiology in the first few months after stopping the contraceptive pill. Therefore, it is recommended not to use safe period contraception in these months.