The three least reliable methods of contraception

　　Contraception is something that every adult should consider. The purpose of contraception is to prevent unintended pregnancies and avoid the associated complications Women Causes harm； However, many people overlook contraception for the sake of convenience and resort to some simple methods of birth control. Below, the editor will introduce which contraceptive methods are the least reliable.

　　will ejaculation Ejaculation and the process that precedes it are continuous actions that occur within a very short period of time. Most men are unable to accurately timing this process, and as a result, they are unable to withdraw their penis from the vagina in time just before reaching orgasm. This causes the initial amount of semen to be discharged into the woman’s vagina. And this portion of semen contains.. sperm They are the most abundant, which is why they are more likely to lead to pregnancy.

　　There are many methods of contraception available, but some people still blindly believe in misconceptions or rely on luck, resulting in unintended pregnancies.

　　Ejaculation outside the body

　　Coital withdrawal is a method of contraception in which, during sexual intercourse, the man stops penetration just before reaching orgasm and withdraws his penis to prevent semen from entering the woman’s vagina, thereby achieving contraceptive effect.

　　This is an ancient method of contraception that was widely used by people in the past when birth control options were scarce.

　　The method of withdrawal for contraception is simple, but it is not reliable and has a relatively high failure rate. The reason for the failure was that a small amount of semen had already been ejaculated into the vagina before the penis was withdrawn.

　　Because the moment just before ejaculation and the actual act of ejaculation are closely connected and occur within a very short interval of time, most men are unable to accurately determine the exact moment in which to proceed.

　　As a result, just before reaching orgasm, it is not possible to withdraw the penis from the vagina in time, causing the initial semen to be discharged into the woman’s vagina.

　　And it is this portion of semen that contains the highest number of sperm, which is why it is more likely to result in pregnancy.

　　This is the main reason why coitus interruptus as a method of contraception fails.

　　Secondly, men often have a small amount of sperm entering the vagina before the act of ejaculation occurs.

　　These are sperm that accumulate within the vas deferens. During sexual arousal, as the vas deferens contract, they are expelled into the urethra and then flow into the vagina along with the secretions from the urethra.

　　Vaginal cleansing

　　Vaginal douching refers to the practice where, after sexual intercourse, a woman immediately washes her vagina with water or another liquid in order to remove any semen from her body, thereby preventing pregnancy.

　　This method is not reliable because the cleaning only targets the vagina, but by the time rinsing begins, many sperm may have already reached other areas uterus In the neck and within the uterus.

　　Furthermore, using disinfectants such as Dettol to clean the vagina can be very dangerous, as improper concentration may cause burns or inflammation.

　　Key Points: Ejaculation is a continuous process, with very little time in between. Most men are unable to accurately timing this process, and as a result, they may not withdraw their penis from the vagina in time just before reaching orgasm. This causes the initial semen to be discharged into the female vagina, and since this portion of semen contains the highest concentration of sperm, it increases the likelihood of pregnancy.

　　The rhythm method

　　The so-called “safe period” method of contraception involves calculating a period during which conception is unlikely, based on the woman’s ovulation cycle and the survival times of sperm and eggs within the female reproductive tract. Intercourse is then scheduled to take place during this time frame in order to achieve contraceptive effects.

　　Generally speaking, an egg can survive for 1 to 2 days after being released, while sperm can survive for 2 to 3 days within the female reproductive tract.

　　Therefore, having intercourse 2-3 days before ovulation and 1-2 days after ovulation increases the chances of conception; this period is known as the fertile window.

　　Ovulation usually occurs within 2 days before or after day 14 of the menstrual cycle, so the safe period is approximately within 10 days after the start of menstruation, and from day 20 after menstruation until the next menstrual period begins. The closer the time is to the actual menstrual period, the greater the likelihood of effective contraception.

　　However, such estimation methods are often unreliable, because the timing of a woman's ovulation is influenced by external factors such as the environment, climate, her own emotional state, and other considerations Health Factors such as physical condition can affect when ovulation occurs, causing it to be delayed or advanced, and it is also possible for additional ovulations to take place.

　　Furthermore, it is not possible to determine with certainty how long sperm and eggs can survive within the female reproductive tract. As a result, it is impossible to calculate the safe period accurately, which means that using the safe period method for contraception is not safe.