How to calculate days in which it is possible not to be protected?
So, for starters, it should be noted that any similar contraceptive method is not 100% effective. Someone may, it scares, but the fact has long been confirmed by everyone.
Everyone has long known that getting pregnant or notYou can get pregnant only on certain days. The ability of fertilization and conception depends on the viability of spermatozoa and the egg. In healthy women and girls, ovulation occurs in the middle of the menstrual cycle. Doctors determined that between the time of onset of ovulation and the subsequent menstrual cycle, there is a relationship, and quite a constant.
Calculate "not dangerous" days can be, given the following points:
- 10-18 days before the first day of subsequent menstruation, the process of ovulation takes place;
- The egg is viable for a day, more precisely 24 hours;
- Viability of spermatozoa is maintained for 48-72 hours.
Highlights are identified and now, relying on them, you can calculate days in which you can not protect yourself. There are three methods for this.
The first method of calculating the days in whichCan not be protected is also called calendar. The essence of it is to track the duration of the last 6-12 menstrual cycles. Of these, the longest and shortest should be tracked. As an example, you can consider the duration of a short menstrual cycle - 26 days, and a long - 31 days. And with the help of fairly simple actions we expect "not dangerous" days. To do this: 26-18 = 8 and 31-10 = 21. After the calculations, we can say that the days in which you can not protect yourself are all until the 8th, and after the 21st. The rest of the days have the opportunity to become pregnant.
The second method.
As a second method of calculating the days in which you canNot protected, called temperature. The name speaks for itself. The meaning of this method is to measure the basal temperature for at least the last three menstrual cycles. There are several criteria for correct and more accurate recording of basal body temperature:
- Measurements must occur every day at exactly the same time, in the morning hours;
- The thermometer, which measures the basal body temperature, must always be the same;
- To make measurements it is necessary right after waking up, not in any way not getting out of bed;
- The measurements are carried out rectally for 5 minutes, and the data should be immediately recorded.
After all the necessary data is collected,For them it is fashionable to construct a graph. If a woman or girl has a normal menstrual cycle, the graph will look like a two-phase curve. At the same time, in the middle of the cycle it will be possible to trace an insignificant increase in the basal body temperature, from about 0.3-0.6 °. When the moment of ovulation occurs, the basal temperature drops by a few tenths of a degree. On the chart this will be noticeable immediately, because a prong is formed, directed downward.
As already mentioned above, the graph consists ofPhase curve. The phase with the lowest basal temperature is called hypothermic, and the phase with the highest temperature level is hyperthermic. When menstruation begins, the curve changes, moving from the hyperthermic to the hypothermic phase. At each girl the rate of rise of a curve is absolutely individual. It can occur quickly within 48 hours or vice versa more slowly. The number of days in which the basal temperature curve rises can be 3 or 4. Also, in some, a stepped pattern is observed.
At the time when ovulation occurs,The transition from the hypothermic to the hyperthermal phase occurs. So, based on the plot, for 4-6 months it is necessary to determine the peak point of the basal temperature. For example, this peak point corresponds to the 10th day of the menstrual cycle. Next, to determine the boundaries of the abstinence period, the following calculations must be made: 10-6 = 4 and 10 + 4 = 14. It follows that the segment of the cycle obtained after the calculations, that is, from the 4th to the 14th, is the most "dangerous", which means that before and after the calculated days, you can not protect yourself.
It is proved that the effectiveness of this methodIs quite high. But it should always be taken into account that any temperature changes related to illness or fatigue can negatively affect the plotting of the chart and, accordingly, the correct curve. Also, do not use this method for women and girls taking any hormonal medications.
The third method.
The third method in medicine is called cervical. It consists in changing the amount of mucus secreted from the genital tract during ovulation.
The discharge does not happen at all or they are rather insignificant when the woman is completely healthy from the 18th day of the cycle and before the onset of menstruation, and also from the 6th to the 10th day.
Slime, like a raw egg yolk, stands out from the 10th to the 18th day.
Viscous and thick mucus immediately becomes noticeable, andIts appearance indicates the onset of the ovulation process. A woman or girl can sense the moment of ovulation. Just enough to track the sensations of "dryness" and "humidity" in the genital tract.
The moment of ovulation corresponds to the peak of the selectionSecret. Simply put, the secretions become transparent, watery and easily expandable. After the appearance of such mucus after 3 or 4 days can not be protected.
For those women who have vaginal and cervical diseases, this method should not be used.
So, of course, these are the three most commonMethods to calculate days in which it is possible not to be protected. But, again, not one of the methods does not give one hundred percent guarantee. Therefore, before using them, you should definitely get advice from a specialist.