The best method of contraception is to use condoms, which have a contraception rate of over 99%. However, it is still possible to get pregnant using external ejaculation because before external ejaculation, the penis carries a small amount of sperm when it is inserted into the vagina, so conception is possible, but the probability of conception from external ejaculation is relatively low. We still need to pay attention to the safety of external ejaculation to reduce the harm to women. Contraception is to prevent sperm from combining with egg "Contraception" means what it means , avoid conception, avoid pregnancy, the principle of contraception is to prevent sperm and egg from meeting, so that the woman cannot get pregnant temporarily. Contraception is mainly achieved by controlling three links in the reproductive process: first, inhibiting the production of sperm and eggs; second, preventing sperm and eggs from combining; third, making the uterine environment unfavorable for sperm capacitation and survival, or unsuitable for the implantation and development of fertilized eggs. 4 contraceptive methods have extremely high failure rates 1. Safe period contraception: failure rate is 20% The failure rate of safe period contraception is as high as 20%. Because women, especially those with irregular menstrual cycles, do not calculate the safe period accurately, or the couple abstains from sex for a long time and does not strictly abide by the rules, it is easy to cause pregnancy. In addition, women's ovulation is subject to many variables and can be delayed or advanced by lifestyle, emotions, sexual life, health conditions and external factors. It cannot be controlled artificially, so safe period contraception is unreliable. 2. Ejaculation outside the body: failure rate 27% The method of external ejaculation refers to the situation where the man pulls out the penis from the vagina just before ejaculation when he is about to ejaculate, and the semen is ejected outside the vagina, so that the sperm cannot meet the egg, thus achieving the purpose of contraception. However, the actual failure rate of external ejaculation contraception is as high as 27%. Because during intercourse, when sexual pleasure reaches its climax, the penis is pulled out a little too slowly, and part of the semen has been ejaculated into the vagina, resulting in contraception failure. In addition, this method can easily make both men and women nervous because they pay too much attention to the ejaculation time, making the intercourse process unsatisfactory and even causing sexual neurasthenia. 3 Emergency contraceptive pills: 26% failure rate Emergency contraceptive pills do not protect against sexual activity that occurs after taking the pills, including the day after taking the pills. The failure rate of emergency contraceptive pills is as high as 26%, and the effectiveness of emergency contraceptive pills is significantly lower than that of conventional contraceptive methods. Moreover, the large doses of hormones contained in emergency contraceptive pills can change the normal hormone levels in women, disrupt the body's endocrine system, and cause changes in the menstrual cycle. Repeated use can lead to menstrual disorders, prolonged bleeding or spotting. Long-term use of large doses of hormones can even result in serious consequences such as infertility. 4 Condom contraception: failure rate 2-15% The failure rate of condom contraception is 2-15%. The condom model is not suitable. Condoms that are too large or too small can easily fall off or break in the vagina during sexual intercourse, allowing semen to flow into the vagina. After ejaculation, before the penis softens, the condom and penis are not pulled out of the vagina in time, and semen overflows from the space between the penis and the condom into the vagina after the penis softens. In addition, if you do not carefully check the condom before use, and end up using a condom with holes, or if the condom breaks accidentally during sexual intercourse, or if your fingernail or ring accidentally scratches an ultra-thin condom, causing semen to leak out, this can also lead to contraception failure. |
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