Analysis of three historically unreliable contraceptive methods

　　Making love is one of the most beautiful and harmonious activities that can exist between a couple. For many reasons, female Contraceptive measures are required. However, using unreliable contraceptive methods can easily endanger women healthy。

　　There are many contraceptive methods in life, but not all of them can achieve the effect you want, so you still need to carefully consider them before you understand them. To master contraception common sense , you need to know about these unreliable contraceptive methods in history.

　　Analysis of three historically unreliable contraceptive methods

　　The most unreliable method 1. Safe period contraception

　　The safe period contraceptive method is a method that many people use now. It refers to a method based on the woman’s ovulation period and sperm , the survival time of eggs in the female reproductive tract, calculating a period of infertility for women, and choosing to have unprotected sexual intercourse during this period to achieve contraceptive purposes.

　　In fact, it is not completely correct to estimate the time based on the safe period, because the time of a woman's ovulation is affected by factors such as the external environment, climate, personal mood, and health status, so ovulation may be delayed or advanced, and additional ovulation may also occur.

　　In addition, the longest survival time of sperm and eggs in the female reproductive tract cannot be determined conclusively. Therefore, the safe period cannot be accurately calculated, so contraception during the safe period is not safe.

　　The most unreliable method 2. In vitro ejaculation contraceptive method

　　As the name suggests, the in vitro ejaculation method means that during intercourse, the penis is pulled out of the vagina in time before ejaculation, and the semen is ejected outside the vagina so that the sperm cannot meet the egg, thereby achieving the purpose of contraception.

　　The unreliability of this method is mainly reflected in the fact that ejaculation and ejaculation are one continuous action, and the time between the two is extremely short. Most men cannot accurately grasp the timing, so that when they are about to reach orgasm, they cannot withdraw the penis from the vagina in time, so that the initially ejaculated semen can be discharged into the woman's vagina.

　　Men often have a small amount of sperm entering the vagina before ejaculation. The sperm at this time is the sperm accumulated in the vas deferens. During sexual excitement, as the vas deferens contracts, it is discharged into the urethra first, and then overflows into the vagina along with urethral secretions.

　　The most unreliable method 3. Vaginal cleansing contraceptive method

　　The vaginal cleansing contraceptive method involves washing the vagina with water immediately after both men and women have sex to flush away the semen in the body and thus prevent pregnancy.

　　This method is not reliable because the scope of washing is only the vagina, but many sperm may have arrived before washing Uterus Cervix and uterus. What's more, many women use highly corrosive lotions such as disinfectants to wash their vaginas after sexual intercourse, thinking that they can "kill" sperm and thus achieve the purpose of contraception.

　　In fact, this method has no scientific basis. More importantly, this method is dangerous. If the concentration of lotion is not properly prepared, it may not only fail to prevent pregnancy but may also cause vaginal burns or inflammation.

　　Only when women treat the method with caution and undergo analysis can the contraceptive effect of both husband and wife be optimal.