Of course, every girl at least once was interested in the question of which days fertilization of the egg is impossible and whether there is a risk of becoming pregnant during the “critical” days. All of the above is an integral component of such a thing as a calendar method of contraception. What is he like? It is used in cases where a woman does not want to have children yet (although she is not very reliable).
This method is among the natural means by which pregnancy can be avoided. It was opened by two gynecology specialists - Japanese Ogino and Austrian Klaus.
How to determine what days you can not get pregnant using the calendar method of contraception?
It should be noted that its meaning lies in the fact that fertilization occurs only for several days from the moment of ovulation, that is, when the ovary leaves the ovum. This period is considered the most favorable for the onset of pregnancy. The rest of the days are conditionally called "sterile." Gynecologists say that not to conceive a baby is easy enough, you just have to refrain from sexual intercourse on “critical” days.
However, there are a number of ways to figure out which days you cannot get pregnant. The first of them provides that it is five days before the onset of the menstrual cycle and five days after its completion. The essence of the second method is as follows: they take into account 14 days before the date of the alleged menstruation, eight days must be subtracted from this number and five days should be added to the end of the above physiological phenomenon - this entire period can be considered “dangerous”.
It must be emphasized that the risk of conceiving a child exists for a woman during the “red” days. That is why in determining which days it is impossible to become pregnant, the calendar method of contraception cannot be considered one hundred percent effective.
Are there other ways to calculate “sterile” days? Yes, of course.
A fairly common way of calculating which days you can not get pregnant is the method of measuring basal body temperature . Again, it should be noted that its effectiveness is not always high. Using a mercury or electronic thermometer , you need to measure the temperature in the rectum daily. Moreover, this procedure is done in the morning, immediately after waking up. All readings of the thermometer must be recorded. If the temperature in the rectum is less than thirty-seven degrees Celsius, then this indicates that the days have come when you can not get pregnant. However, this cannot be considered an axiom, and, of course, there are exceptions to the rules.
In a huge number of situations, until the time of ovulation, the basal temperature is less than thirty-seven degrees Celsius. But it must be remembered that sperm have a very high degree of vitality, which is why they can be active for several days. Therefore, it is far from a fact that the physical closeness that happened between partners, in particular, five days before the initial moment of ovulation, cannot lead to conception.
Dangerous days, which are easy to get pregnant on, can also be determined using special tests. The above method is considered reliable, but quite expensive.
Well, of course, focus on your own feelings. During ovulation, a woman feels pain in the lower abdomen, abundant vaginal discharge begins. These are clear signs that the risk of pregnancy during this period is maximum.