But you may not know that the sperm can fertilize the egg within three days after it is discharged, but there are also reports that the sperm still retains fertility after one week of sex. Although the ovulation period is in the middle of menstruation, due to the external environment, temperature, mood, health and other factors, the ovulation may be advanced or delayed.
Therefore, the method of safe contraception is not reliable at all. In general, the method of safe contraception is only applicable to couples who have regular menstrual cycles, long-term cohabitation, regular living, and cooperation and understanding between the two parties.
Lies Do not be afraid of trouble
What method are you using for contraception? The contraceptive pill that you must take every time before sex does not guarantee the safety of "emergency" sexual behavior, have these short-term contraceptive measures already annoying you?
In fact, in addition to condoms used in vitro, oral contraceptives, built-in contraceptives, etc., there are many quite effective contraceptive methods you do not know yet. For example, an intrauterine device that must be placed in the womb by surgery. All it needs to do is to prevent fertilized eggs from growing in the womb.
Generally, as long as there is nothing abnormal, it will not cause trouble to sex for a year or two. Although intrauterine contraception does not guarantee that you are not infected with sexually transmitted diseases, it is indeed the most effective method of contraception. Once inserted, you can forget its existence, and only have a 1% failure rate.
This long-term contraceptive method is undoubtedly the most effective and convenient. But it also has unsuitable people, such as those with extreme postuterine flexion, endometritis, salpingitis, vaginitis, uterine fibroids and other gynecological diseases, or those with excessive menstrual flow and secretions. If you are interested in intrauterine contraception, go to a regular hospital and ask an experienced doctor.
Lies Mikasa's contraceptive effect is the same for anyone
On the market, only a few contraceptives are indicated on the package. Is it suitable for people to take the same effect?
In fact, women who are overweight have a faster metabolism and need more hormones to prevent conception. They will be hindered by too much fat in the recipient during contraception, which will greatly reduce the effect of the drug, and it will be difficult to get rid of the weight effect when "creating a person." Therefore, they should be careful when choosing the appropriate contraceptive and "creating" method.
Moreover, many contraceptives have a fat solubilizing effect and may stay in the place where fat accumulates in the body so that it cannot reach the blood that it should go to really take effect.
I would like to remind you that if you weigh more than 58 kg, it is best to ask the doctor to recommend other more reliable methods, such as an intrauterine contraceptive device, or a combination of contraceptives and condoms to ensure foolproofness.
Four lies Contraceptive effect is good
Do you think it is foolproof if you take contraception? You must know that when a doctor tells you how effective contraceptives are, that's also based on proper use. Although contraceptives and condoms advertise their effectiveness as high as 99% and 97%. However, in actual applications, the real effective rates of the two are 94% and 86%, respectively. That is, it does not have 100% effective contraception at all.
To ensure that the pill is effective, it should be taken at the same time every day. You don't try to combine taking with daily life, it can help you remember time better, such as taking it every morning after brushing your teeth.
In case you forget to take it, read the precautions carefully and see what you can do to make up for it. Women who choose a condom can apply some lubricating ointment if they have less secretion, which can be tightly fixed to prevent slipping, and the effect is better.
Lie 5 If the penis does not fully enter, that is to say, the man ejaculates in the woman's vulva rather than in the vagina, the woman will not become pregnant
The fact is that it is possible for the sperm to enter the vagina and continue to move towards the uterus.
How does real contraception work?
The so-called contraceptive principle is to use scientific methods to prevent and destroy certain links in the normal conception process to avoid pregnancy and prevent fertility. There are many contraceptive methods currently used. According to their contraceptive principles, they can be summarized into the following methods:
(1) Inhibit ovulation of the ovary
There are female short-acting, long-acting contraceptives and subcutaneous implant contraceptives that have the effect of inhibiting ovulation of the ovary. The development and maturation of egg cells are affected by the hypothalamus and pituitary gland. Such contraceptives can inhibit the function of the hypothalamus and pituitary gland to prevent the development of egg cells, thereby achieving contraceptive purposes. In addition, women also have the effect of inhibiting ovulation during lactation, so they can prevent pregnancy.
(2) Inhibit normal sperm development
The gossypol extracted from cottonseed can inhibit the normal development of sperm. Long-term use of gossypol can significantly reduce or completely disappear the sperm count, thereby achieving the goal of infertility. This male contraceptive has not yet been promoted. In recent years, some places have used physical methods (such as ultrasound, microwave, warming, etc. to stimulate the testes) to inhibit the spermatogenic function of the testes, and some progress has been made.
(3) prevent sperm and egg from binding
There are many methods of this type of contraception, the purpose of which is to prevent sperm and eggs from combining to achieve the purpose of contraception. For example, condoms, vaginal diaphragms, etc. prevent sperm from entering the vagina, or sperm entering the vagina cannot enter the uterine cavity; topical contraceptives have a strong spermicidal effect. Putting them into the vagina can kill the sperm that has entered the vagina. Prevents sperm from entering the uterine cavity; male and female sterilization can prevent sperm from being discharged or prevent the sperm from combining with the egg; it is a permanent contraceptive measure; during sexual intercourse, in vitro ejaculation or perineal urethral compression is used to make semen excrete Shoot your bladder outside the vagina or retrograde so that semen does not enter the vagina.
(4) Prevent implantation of fertilized eggs
The uterus is the place where the fetus is conceived. If you try to interfere with the internal environment of the uterus, it will not be conducive to the growth and development of fertilized eggs. Placement of birth control rings in the uterus and various family visits contraceptives can change the endometrium and prevent the implantation and development of fertilized eggs.
(5) Staggered ovulation contraception
Staggering ovulation contraception is contraception during the safe period, that is, using the menstrual cycle push algorithm, basal body temperature measurement, and cervical mucus observation method, etc. to master women's ovulation period, avoid ovulation sexual intercourse to prevent contraception, so that sperm and eggs miss the opportunity to meet.
Contraception methods commonly used by men
Although there are many contraceptive methods that people can use at present, there are relatively few contraceptive methods for men. Commonly used are condoms, vas deferens or occlusions, and other contraceptives such as oral contraceptives, external insemination, and perineal urinary oppression.
A condom is a male contraceptive tool currently used. As long as it is used correctly, the contraceptive effect is better, but some people are unwilling to use it because they are afraid of affecting sexuality or using it.
Vasectomy ligation or blockage is a type of sterilization surgery, which is suitable for couples or wives who are no longer having children because they are unable to have children.
Although oral contraceptives for men have been successfully researched, they have certain shortcomings and cannot be promoted.
Extracorporeal ejaculation and perineal urethral compression methods are not easy to master properly, so the contraceptive effect is not reliable, and few people use them now.
Contraception methods commonly used by women
There are many female contraceptive methods. Commonly used are contraceptives, birth control rings, tubal ligation or blockage, vaginal diaphragm, vaginal contraceptive rings, and other contraceptives such as safety and lactation.
There are many types of contraceptives, including short-acting contraceptives, long-acting contraceptives, family-visiting contraceptives, subcutaneously implanted contraceptives, and topical contraceptives. Among them, the most effective short-acting contraceptives are used. Up to 100%. Long-acting contraceptives are only used once a month, and some can be used once every 2-3 months; it can reduce the trouble of taking pills every day, and the contraceptive effect is slightly inferior to short-acting contraceptives. Implantation of subcutaneous contraceptives can prevent contraception for about 5 years. Since it has not been produced in China, it is currently imported and cannot be widely used. Family visit contraceptives are quick-acting contraceptives and are mainly used by visiting couples and also by newlyweds. The main effect of topical contraceptives is to kill sperm. Among them, the contraceptive film is the best, and the contraceptive ointment is less effective.
The iliac birth control ring is currently the most widely used long-acting contraceptive tool. Commonly used are stainless steel round rings. This kind of birth control ring can be used for contraception for about 20 years. The disadvantages are the high shedding rate and the pregnancy rate with the ring. The contraceptive effect with the copper birth control ring is better, the drop-out rate and the pregnancy rate with the ring are both low, and it has been widely used in various places.
The vaginal contraceptive ring is easy to use and the contraceptive effect is good. It has been promoted in some areas.
Vaginal diaphragm is more troublesome to use. If the placement technique is not properly grasped, it will easily lead to failure, so it cannot be widely used.
Oviductal sterilization is a permanent contraceptive measure. One operation can be used for lifelong contraception. It is especially suitable for women who no longer have children or who cannot bear children due to illness.
Contraceptive methods in the safe period and lactation period are not easy to grasp correctly. It is easy to cause failure, so it should not be promoted.
How to ensure that contraception does not fail?
Learn to use condoms, vaginal diaphragms, and other external contraceptives properly, or you will fail. If the use of external contraceptives fails (such as condoms rupture), timely remedial measures should be taken to prevent pregnancy.
In short, contraception is a long and arduous task, and you can't be paralyzed at any time.
The most unbelievable five contraceptive methods, women should pay attention
Lactation contraception
Non-lactating mothers usually resume ovulation and resume menstruation after 4-6 weeks of delivery. Most lactating women do not have menstruation. Some people think that breastfeeding mothers will not ovulate and will not conceive without menstruation. In fact, this understanding is wrong. Breastfeeding mothers may resume ovulation even if they are not menstruating. If not contraceptive during this period, it is very easy to cause the woman to "darkly." Therefore, nursing mothers should also contracept.
Pee contraception
Some people think that after men and women have sex in the same room, letting the woman flush the vagina by urination can prevent pregnancy. This is a confused understanding. Women's vagina and urethra are two different organs. After men and women have sex in the same room, it is impossible for the woman to urinate to sperm out of the other channel.
"Safe Period" Contraception
The so-called "safe period" refers to the 7 days before menstruation and the first 8 days after menstruation. People also call it "first seven after eight". This time is not the ovulation period for women. At this time, the couple is in the same room, and the woman is generally not pregnant, so people call this period the "safety period". But the "security period" is not absolute security. Because some women ovulate irregularly. Some women have regular ovulation, but when their mood, living environment and physical conditions change greatly, their ovulation will lose its original regularity. Therefore, it is not safe to use female safe contraception.
Vaginal irrigation contraception
Some people think that after men and women are in the same room if the woman has a vaginal flush, she can prevent pregnancy. This method is actually very unsafe. In the same room, if the man ejaculates, countless sperm will soon swim into the woman's uterine cavity. At this time, no matter how the woman performs vaginal flushing, she cannot flush all the sperm out of the body. Therefore, using the vaginal irrigation method for contraception, the woman can still get pregnant.
If the woman is breastfeeding or menstrual, if you have strong sexual desire, you can choose to buy a love doll to solve your situation, so that your girlfriend or wife will not worry that you will be derailed.
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