Is wearing a condom guaranteed to prevent pregnancy? Which groups are suitable for different types of condoms

Will not wearing a condom lead to pregnancy?

The menstrual cycle of women usually only produces one egg, and the fertility (i.e. survival) of the egg is calculated from the ovarian discharge, with a maximum of 24-48 hours. The lifespan of sperm in the female reproductive tract is about 2-3 days, so having sexual intercourse 2-3 days before ovulation and 1-2 days after ovulation may lead to pregnancy. This period is called the easy pregnancy period, also known as the danger period or pregnancy period. Ovarian ovulation usually occurs within 2 days before and after menstruation (calculated based on the menstrual cycle), and the ovulation date is usually the middle of the two cycles before and after menstruation. Without ovulation time, it is impossible to conceive. Ovulation occurs during ovulation., Fertilization can only be achieved by encountering sperm. The safety period is approximately 10 days after menstruation., On the 20th day after menstruation, the closer to the next menstrual period, the greater the likelihood of contraception. If you don't want to wear a condom or become pregnant, women can choose to have sex during the safe period. However, there may still be accidents. Some women have irregular menstrual cycles and emotional fluctuations that can affect their ovulation cycle. Therefore, not wearing a condom is highly likely to win the lottery. It is recommended not to wear condoms within 24 hours after sexual intercourse., Women should take oral contraceptives.

2. What is a condom?

Condoms, also known as condoms, condoms, condoms, or condoms, are a simple way to prevent pregnancy in a non pharmacological form. They are mainly used to prevent sperm and eggs from combining during sexual intercourse, in addition to preventing pregnancy., Condoms can also prevent the spread of gonorrhea, AIDS and other sexually transmitted diseases, so they are also called condoms condoms. Natural rubber or polyurethane is usually used as the raw material of condoms., Compared with other contraceptive methods, condoms are more convenient to use and have no side effects. The success rate of contraception is generally 97%, and specially trained users can achieve a success rate of 98%. Also known as a small umbrella, raincoat, or rain hat.

3. Background of condom use

Zhu Qi, professor of the China Institute of Health Education, is one of the earliest experts in AIDS research in China. In the West, especially in the United States, people have been struggling with AIDS for 20 years. Finally, more and more people feel that AIDS is not a simple medical problem, but also a social problem derived from drug abuse, sexual freedom and family disintegration.

For many years, some domestic scholars and officials believed that, in an open China, sexual freedom will inevitably increase. Therefore, they openly advocated reducing sexual partners to the public and widely advocated the use of condoms, the so-called safe sex, the so-called safe sex, in order to prevent the prevalence of AIDS.