Despite the availability and abundance of different contraceptive means that not all resort to their help to protect against unwanted pregnancy. Someone in the first place are financial problems, someone is lazy they enjoy the rest lived irregular sexual life. Many women, and not only women who had heard of such a concept as having a menstrual cycle safe and unsafe days. But not everyone knows how to count the days when pregnancy is impossible. It should immediately be mentioned that, even knowing their safe days, an absolute guarantee of protection against pregnancy is not.
Who can use the calculation of safe days
To use the calendar method of protection from pregnancy, that is, to identify hazardous and safe days of the menstrual cycle possible if the following conditions:
age from 25 to 35 years;
existence of a stable menstrual cycle;
absence of stress, addiction to colds, trips and frequent visits;
to use after unprotected intercourse more contraceptive measures.
Based on the list, only a very small percentage of women can use the calendar method of birth control. In addition, Strictly speaking, in the menstrual cycle there is no safe days, there are dangerous and very dangerous.
The method of Ogino-Clauss
The base of the method lies in the fact that menstruation comes two weeks after ovulation. The very same ovulation occurs approximately in the middle of the menstrual cycle. For example, if your menstrual cycle is 28 days, ovulation is about the thirteenth – fourteenth day, and through 14 days will come monthly. By the method of Ogino-Clauss takes into account that viable sperm up to three days, and the egg can live for a maximum of two days (some men have sperm reaches seven days or more). Calculation of safe days is as follows: to probable date release of the egg from the ovary to add two before and after. That have to dvadtsativosmidnevnogo menstrual cycle it will be the eleventh and sixteenth days. To eliminate errors in the calculation of the figures to add two more days before and after. Received from the days of the ninth to the eighteenth hazardous, and on the other days of the menstrual cycle pregnancy is impossible. Effectiveness of the method, is only thirty percent.
Billings method or tactile method
This method is based on changes in vaginal discharge during the menstrual cycle. At the time of ovulation occurred mucous discharge from the cervix become watery and transparent, which facilitates sperm from entering the uterus. Thickening of cervical secretions and decrease in their number indicates the release of an egg from the ovary and hit her in the fallopian tube. This period is most favorable for conception. Proponents of the method of Billings believes that after three days of onset of condensation secretion occur safe days. The disadvantage is that not every woman capable of evaluating the mucus on the eye. In addition, the presence of inflammatory processes of female reproductive organs (in particular kolpitov) method is inefficient.
Method for measuring basal body temperature
Perhaps the basal body temperature method is the most reliable. By measuring the basal temperature and a schedule, you can determine the day ovulation. To obtain reliable data necessary to comply with the following Rules:
to measure the temperature of the first day of the menstrual cycle;
measurement time of five – six minutes;
measure the temperature should be in the morning without getting out of bed;
temperature measurement should be after six hours uninterrupted sleep;
in the case of sexual intercourse the day before or the morning of the measurement data not informative;
taking certain drugs or drug alcohol reduces the reliability of the results.
After establishing a schedule for at least three menstrual cycles is determined by the day of ovulation. In the first phase of the cycle temperature will range 36,2-36,4 degrees. On the day of ovulation occurs a sharp drop in the temperature curve, and after the temperature rises to higher numbers (37.0 and above). Dangerous days are the day of ovulation plus a couple of days after that. All the days that followed are safe.
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