Natural contraceptive law including safe period contraception law and nursing menopause contraception law. The natural contraceptive law does not disturb body’s physiological function, also does not have the side effect, the woman who is not suitable uses the woman who other contraceptive method or is at the special physiological stage to be glad to select. Because is very unpredictable to the breast-feeding period woman’s restoration ovulation decides, therefore the nursing menopause contraception law basically has not used, post-natal, no matter whether to come the menstruation, should take the contraceptive measure.
Has discovered the egg since 1827 in mammal in vivo, until the 1930s, the ovulation theory only then relates with the natural contraception. First what obtains utilizes is the calendar type rhythm contraception law; After that is the foundation body temperature law; Afterward was sickness the symptom body temperature law, is also unifies using the symptom and the foundation body temperature determines the ovulation period to carry on the contraception. The date calendar, the foundation body temperature law, the cervix of the uterus mucous and so on refer to draft synthesize, with instructs the control sex life, this kind of comprehensive natural control birth law is the quite comprehensive safe period contraception law. Although some people of 10-20 years have achieved the effective contraception with the safe period, however in fact this method by far has not been yet arrived the consummation. Because its method’s scientific nature is very strong, requests the user to have certain cultural knowledge, and needs professionals’ correct instruction, grasps the application to have certain difficulty.
The safe period computation uses the question which the woman must make clear first. The majority woman’s ovulation times are in their next time menstruation the approximately two weeks, the ovulation possibly occur ahead of time in the next time menstruation previous 12–16 days, but most approximately before the menstruation the 14th day. But menstrual cycle’s change is causes by the hormone change, certain hormones hypothalamus’s adjustment, hypothalamus’s secretion are received the extraneous factor the influence, like is sick, the travel, the mental strain, the mood excited or constrains and so on, possibly causes to ovulate ahead of time either extends, causes the menstrual cycle to reduce or the extension, but ovulates ahead of time or extends also has the signal, by now the cervix of the uterus mucilage changed, if these signal’s appearance compared to anticipated must early, please do not fail to attend to one’s duty as a supervisor.
The safe period contraception is becomes by the following three concrete method synthesis:①Plan foundation clinical thermometer: The foundation body temperature is the human body after the long time sleep wakes, before not yet carries on any activity, measures body temperature. In the normal condition, woman’s is low before ovulation foundation body temperature, after the ovulation advances, after before this kind, low, high temperature curve is called the double-phase temperature curve, indicated that the ovary has the ovulation. After the foundation clinical thermometer may use for discovers the ovulation the safe period.②Time which cannot become pregnant according to the calendar type rhythm contraception formula computation ovulation early time. This formula is: Before menstrual cycle number of days - 21= passes by the late arrival ovulation, the safe period last day, if you record the shortest menstrual cycle are 32 days, should after starting the menstruation the 11th day of stop sex life, because the 12th day possibly became pregnant. Menstrual cycle’s number of days is passes by starts the first day to begin reckoning, before yizhi dao the next time menstrual period starts one day.③Using the cervix of the uterus mucilage secretion, the physics and chemistry nature change distinguishes easily and is not easy the gestation period to receive the gestation period, generally after the menstruation has several days “the dry time”, namely the cervix of the uterus mucilage assumes the slime plug in the cervix of the uterus tube, the woman vaginal orifice non-liquid felt, along with the graafian follicle growth, the estrogen level increases, the cervix of the uterus mucilage quantity increases, the woman may use two figures to take the vaginal orifice mucilage, separates two figure of observation mucilage the nature, pulls when the mucilage may amount to 6–10 centimeters, takes the peak date, hereafter the mucilage changes sticks thickly, vaginal orifice mucilage vanishing. Have the mucilage time to easily to receive the gestation period, is not suitable has a sexual intercourse, “the dry time” and the mucilage peak 3 days will be able to have a sexual intercourse in the future. The cervix of the uterus mucilage law and the foundation body temperature determination or the calendar type rhythm computation law unifies, can observe the ovulation period accurately.
Besides the above three methods, the yellow body generator (lh) or the saliva crystallization observation also possibly prompts the ovulation date through the determination urine, must purchase the lh indicator paper (saying that ovulation indicator paper) or the saliva crystallizes “the self-test mirror”, is suitable in the current economic condition loose family.
The woman in vivo’s natural physiological indication can prompt the menstrual cycle the different period, specially around ovulation several days, but must know in advance that the ovulation date is difficult, needs to have 5 day-long security, because after ovulating, the egg may survive for 12–24 hours, the sperm after entering woman in vivo can cause the egg fertilization the time approximately is 3 days, therefore for the contraception, husbands and wives is ovulating previous 3 days with to ovulate latter 2 days to avoid having a sexual intercourse.
Because the safe period contraception law is one physiology contraception law, is only suitable for the menstrual cycle rule, lives together, the law of life, both sides to be able for a long time to coordinate and forgiveness husbands and wives mutually, is suitable for menstrual cycle anomalous ill, visiting relatives time husbands and wives and the living conditions vicissitude, use period should the special attention following several kind of situations:①Cold will give off heat will enable you to obtain a foundation rise of bodily temperature reading, do not take it the ovulation the evidence.②Disease similarly will cause you this and a next ovulation ahead of time or postpones;③Encircles the menopause like to have the few colporrhagia, should after the hemorrhage stops the fourth talent may have a sexual intercourse, because this kind of hemorrhage possibly is an ovulation causes;④After stopping using the oral contraceptive the first several months possibly present the extra ovulation or pass by anomalous, these months cannot use the safe period contraception as far as possible
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