Why can't I get pregnant by ejaculating outside the vagina?

There are many contraceptive measures, such as condoms, emergency contraception, contraceptive rings, etc. There is also a kind of contraceptive ejaculation outside the body. Contraceptive measures such as ejaculation outside the body are also relatively common, but their success rate is not 100%. Why can pregnancy occur by ejaculation outside the body? In fact, when a man and a woman have sex, the man does not ejaculate sperm only when he reaches climax. Sperm can also be ejaculated during the whole process, but the number is relatively small compared to the sperm ejaculated during climax.

However, you should know that one drop of semen contains more than 20 million sperm, and only one sperm is needed to produce sperm-egg fusion for pregnancy. In addition, men cannot completely control their ejaculation outside the body. Some men forget to withdraw due to being addicted to the pleasure of climax and ejaculation, or they withdraw too slowly, and some semen is ejaculated at night and remains in the woman's body, which may make the woman pregnant.

Although the method of contraception with ejaculation outside the body is simple, it is not safe and has a high failure rate. The reason for failure is that a small amount of semen has been ejaculated into the vagina before the male penis is pulled out of the vagina. Because the time before and after ejaculation is a consecutive action with a very short interval between them, most men cannot grasp the opportunity accurately, so when they are about to achieve sexual pleasure, they cannot withdraw their penis from the woman's vagina in time, causing the first ejaculated semen to be discharged into the woman's vagina, where the sperm density is the highest, so it is easy to cause pregnancy. It is the key reason for accidental pregnancy during ejaculation outside the body.

Secondly, men usually have a small amount of sperm entering the vagina before the ejaculation occurs. It is the sperm stored in the ejaculatory duct. During the sexual impulse process, as the ejaculatory duct contracts, it is first discharged into the urethra, and then overflows into the vagina with urethral secretions. This type of male sperm leakage that occurs before a man ejaculates cannot be controlled and may result in accidental pregnancy.

The failure rate of ejaculation outside the body is very high. According to statistical analysis, if ejaculation outside the body is used as a contraceptive measure, the failure rate will be around 90%.

What is the actual effect of ejaculation outside the body for men's health

Like many other contraceptive methods, the key to the success of withdrawal is proper operation and persistent use. After scientific research, some research teams found that if the correct operation method is not taken seriously, the failure rate of the external ejaculation method is about 15% to 28%. In comparison, the error rate for taking emergency contraception is about 2% to 8%, the error rate for using contraceptive rings is only about 0.8%, and the error rate for using condoms is between 10% and 18%. Some people feel that using withdrawal may actually have similar effects to using condoms, but further scientific research is needed in these areas. When couples use contraceptive measures appropriately every time they have sex, the failure rate of ejaculation outside the body is 4%. In contrast, when contraceptive methods are used every time they have sex, the failure rate of taking emergency contraception is 0.3%, the failure rate of using contraceptive rings is 0.6%, and the failure rate of using condoms is 2%.

The main reason for the failure of the external ejaculation contraceptive method is that at the moment of ejaculation, if the man cannot withdraw his penis in time, part of the semen will be ejaculated into the female vagina, causing the female to become pregnant. Some people also think that the failure of the external ejaculation contraceptive method is because before the man ejaculates, some sperm will be discharged unknowingly and enter the woman's vagina to cause pregnancy. Some scientific research organizations have found that no male sperm that can cause pregnancy can be found in the blood discharged from men before ejaculation. Most people think that the reason for accidental pregnancy during ejaculation outside the vagina is that a small amount of semen enters the woman's vagina before the man ejaculates. Based on the above reasons, some experts suggest that guys should urinate before sexual intercourse to clear the residual sperm in the urethra, clean the genitals as soon as possible before ejaculation, and avoid touching the female private parts forcefully.