Misconception one: through the gynecological routine examination, everything is OK Recently, a U.S. health institutions survey: most women know nothing about sexually transmitted diseases; only 1/4 of the women know a little chlamydia (one of the most common sexually transmitted diseases), can lead to infertility; nearly half of the women believe that, no matter what the body problems, once a year, a routine physical examination can be found out! -Unfortunately, this is far from being the case. This is even more common in China, where a gynecologist at the First Affiliated Hospital of Peking University told us that only a handful of gynecological outpatient clinics ask for lab tests for sexually transmitted diseases. The doctor’s advice is: never put all your hopes on routine gynecological examinations. If you suspect that you have a sexually transmitted disease, even if it is highly unlikely, you should notify your doctor in time and tell him all the symptoms as they are, such as smelly discharges, pain in urination, blisters, and so on. Misconception No. 2: If you have an STI, you must feel it This is a big misconception. Many sexually transmitted diseases (such as papillomavirus, chlamydia infection, herpes, etc.), often silent harm to the human body, the patient himself has no sense of abnormality, compared to men, such diseases in the female body is more hidden, but also less likely to be detected in time. If not treated in time, STDs can affect other organs of the female body. For example, papillomavirus can cause cervical cancer, and chlamydia can lead to pelvic inflammatory disease (PID), which can lead to infertility. Don’t take it lightly! Misconception No. 3: No ejaculation will not be pregnant; menstrual intercourse will not be pregnant The method of contraception of extracorporeal ejaculation is quite dangerous. Our lover in the “foreplay” in the secretion of lubricating fluid (prostate fluid), contains part of the semen. And don’t put too much stock in a man’s ability to control his semen – withdrawing it before orgasm is hardly foolproof. In fact, most men leak sperm and have enough sperm and motility to cause pregnancy. It’s not impossible to get pregnant if you ejaculate in the vulva without entering the vagina. Active sperm may enter the vagina and continue to move toward the uterus. Also, it is generally believed that you don’t have to worry about pregnancy if you have intercourse during your period. But the fact is: there are precedents of pregnancy due to menstrual intercourse. This is due to irregular ovulation. Most women ovulate around the 14th day after the start of menstruation, but if ovulation occurs early, coupled with the high vitality of the sperm, pregnancy is likely to result. The average number of sperms in a male ejaculation is about 300 million sperms, and these sperms can survive in a woman’s body for about 7 days, so if this is coupled with a woman ovulating early, it is very likely that she will become pregnant. Therefore, it is important to take the necessary contraceptive measures even during menstruation. Misconception No. 4: Continuous use of birth control pills not only stops menstruation but also reduces the risk of breast cancer Only the first half of the sentence is correct. We know that continuous use of birth control pills can stop menstruation temporarily. And while it’s well documented that women with fewer periods have lower rates of breast cancer, it’s not as simple as one plus one equals two. In fact, continued use of birth control pills does not reduce the chances of developing breast cancer for the following reasons: The development of breast cancer depends on the level of estrogen production. Breast cancer was rare in ancient societies because women gave birth just after puberty and went through several pregnancies during their lives. During pregnancy and breastfeeding, the ovaries are at rest and no longer produce estrogen. And the lower the level of estrogen in a woman’s body, the lower her chances of developing breast cancer. So from a purely physiological point of view, the earlier a woman starts childbearing, the better. However, in modern society we have pushed back the age of childbearing considerably. There is a misconception that continued use of birth control pills reduces the risk of breast cancer. The opposite is true, taking the pill will not reduce the level of estrogen in the body, it will also increase the amount of estrogen. Therefore, in pure theory, it should increase the risk of breast cancer, but from the reality of the survey figures can not be found that there is any inevitable relationship between the two, long-term use of contraceptive pills women do not have to worry too much. Moreover, the estrogen content of birth control pills developed by modern technology has been much lower than before. Misconception No. 5: Use of contraceptives will not be infected with sexually transmitted diseases Among the many contraceptives, only the condom has this dual function of contraception, but also to prevent the infection of sexually transmitted diseases. The following is an analysis of the ability of several contraceptive devices to resist STDs: 1. Oral contraceptive pills: they are powerless to prevent the infection of sexually transmitted diseases. 2, uterine cap, intrauterine diaphragm: some protection for the fallopian tubes, while the ability to protect the vagina is very insufficient. 3. Intrauterine device (IUD): this form of contraception actually increases a woman’s risk of contracting sexually transmitted diseases because no other protection is needed to prevent conception. 4. Sterilization: the risk of pelvic inflammatory disease is reduced, but the risk of cervical and vaginal infections remains. Misconception No. 6: oral contraceptives are harmful to the body For women who smoke, oral contraceptives do have certain hazards, they may become victims of heart disease, stroke and other diseases, while non-smoking women do not have to worry about this problem. The survey of the United States medical institutions: women who take birth control pills have a lower chance of developing ovarian cancer than women who do not take the pill by 40% to 60%, and the chance of developing endometrial cancer is 50% lower, and the chance of developing ovarian cysts is also relatively lower. Oral contraceptives are also helpful in preventing pelvic inflammatory disease (PID) because regular use of the pill thickens cervical mucus, which prevents the growth of bacteria. In addition, oral contraceptives reduce the risk of ectopic pregnancy and can help with osteoporosis, a problem that occurs in women during menopause. If you are planning to use birth control pills, you are reminded that: 1. If you have a family history of heart disease, stroke and cardiovascular disease, or if you have suffered from breast, endometrial or liver cancer, it is best to switch to another method. 2. If you are over 35 years old and a smoker, it is also recommended to use another method of contraception. 3. Contraceptive pills should not be taken together with antibiotics, as this will affect the effectiveness of the medicine and lead to contraceptive failure. 4. Contraceptive pills should be taken for a full cycle before stopping, otherwise it will cause menstrual disorders.