Is the safety period and in vitro exclusion really safe?

[Introduction] In daily life, I heard about safety -expiration contraception and in vitro essence contraceptives. Are these two methods really safe?

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For couples who have no fertility needs for the time being, how to take effective contraception in the same room is a question worth paying attention to.If you are unfortunate, you need abortion, and it is great to cause physical damage to women.I heard in daily life and I have heard of safety -period contraception and in vitro essence contraceptives. Are these two methods really safe?

Speaking of the conclusion first: it is not safe.

In the safety period, healthy women’s ovulation cycle is generally more regular. For example, women with a menstrual cycle of 28 days, the ovulation date is probably the 14th day before the menstrual tide, the first 5 days before the ovulation day, and 4 days after the ovulation day are called ovulationDuring the period, except for the ovulation period and menstrual period, the remaining days are the legendary "safety period".The principle of so -called safe contraception is the time for sperm to avoid the time to meet with eggs. The two do not die in each other. Because the eggs survive for 1 to 2 days, sperm can survive for 2 to 3 days. Because the time is staggered, the time is staggered.The eggs can only wave their sleeves without taking a sperm.But this is limited to a very perfect situation. Women’s physiological cycle is not completely accurate, and there are quite many factors that affect the physiological cycle, such as drugs, mood, pressure, fright, physical conditions, and even weather. Therefore, there is no way to calculate accurate ovulation ovulation.On the day, the above theory cannot be established.The failure rate of safety during the safe period is as high as 25%, and the safety period contraception is not safe.

Extract in vitro, this contraceptive method is well understood, that is, men are performing in vitro, sperm does not enter women, and naturally cannot conceive.The theory is very good, but there are certain problems. It is not only sperm in the liquid in the ejaculation stage. There are a small amount of sperm in the early secretions.Exclusion may affect the quality of sexual life of both husband and wife, and it is not recommended to use it.

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