The possibility of becoming pregnant with a female body is due to a process called ovulation. It is then that the egg is ready for fertilization. Ovulation, if there are no health problems for a woman, occurs monthly. Duration of ovulation, usually 1-2 days. There are several ways to calculate ovulation. But, unfortunately, none of them is one hundred percent, and therefore the possibility of unwanted pregnancy is quite high.
More or less correctly calculate the onset of ovulation possible in the event that a woman has a constant and accurate cycle. To determine it, you need to keep a calendar in which to mark the days of menstruation for six months or a year. For example, with a 28-day cycle, a dangerous moment is the 12th day of the menstrual cycle. The most favorable days for unprotected sex in this case are considered 1-2 days before ovulation and 1-2 days after it. But, in fact, not everything is so simple. Practice shows that a healthy woman of reproductive age can get pregnant on any day of her cycle. Just some days are considered "very dangerous", while others are "a little bit dangerous". Named days before and after ovulation just belong to the group of these "a little bit dangerous."
If the cycle is unstable, the following formula can be used to determine the days when pregnancy is least likely. Keep a calendar of menstruation for six months or a year. Take the longest and shortest menstrual cycles. From the short take away the number 18. The day that will turn out to be the most dangerous. Then, from the longest period, subtract the number 11. The day that ends the dangerous period ends.
There is an opinion that you can not get pregnant immediately before menstruation. Is it true? Yes and no. The fact is that during menstruation there is a rejection of tissues. They then go out during the entire period of menstruation. And along with them with the flow of blood is washed and the egg. True, this is the case if it did not come out earlier.
However, Still, it is possible to get pregnant before the menstrual period. This is especially true for women who have an irregular sex life. In this case, the body tries to use the opportunity and at the first sexual intercourse is able to produce unscheduled ovulation. And - voila!
Another opinion, supposedly can not get pregnant right after the menstruation - is also questionable. In most cases this is so. But it happens and not so. Imagine the situation: unprotected sexual intercourse occurs on the second day after the end of menstruation. Several small viable spermatozoa lingered in the vagina and "lived" there, that is, remained viable and active, for another 2-3 days. And then the egg matured. Well, then you understand everything yourself. Moreover, the timing of ovulation in each woman can be strictly individual, depending on the state of her health, conditions of life, stressful situations and other things.
But on what days can not you get pregnant? We can say that it is extremely low during pregnancy to get pregnant right away. But notice, still exists. Nevertheless, during the months there is an abruption of the "unpleasant" epithelium, which was nurtured in order to allow the egg to gain a foothold and begin to develop. At this time in 98% of cases, ovulation can not be, and if it can, the blood flow creates an unfavorable environment for spermatozoa and subsequent implantation of the egg.
But, if the menstruation is protracted, and before ovulation 4-6 days, it is possible that the sperm that gets into the vagina during menstruation can wait for the egg.
And with absolute certainty, that in the year there are days when it is simply impossible to become pregnant. We are talking about the anovulatory cycles that every woman has, every couple of times a year. At this time, ovulation does not occur at all, so there is absolutely nothing to be afraid of.
But these days you need to determine these days by the following methods:
- keep a calendar of basal temperature measurements (in case of anovulation there are no temperature changes);
- periodically conduct folliculometry (it will show whether a dominant follicle is formed);
- carry out tests for ovulation (they will be negative).
All of the above methods are quite difficult to implement, because run constantly to the pharmacy or to the doctor to determine, whether it is possible with a quiet soul to have sex without the use of contraceptives.
As you understand, practically no method can promise a one hundred percent guarantee that on a certain day you will not become pregnant. Therefore, experts advise, the more correct decision will be the selection of suitable for you and your partner contraceptives. Fortunately, the choice of contraception is now quite extensive, and therefore to choose the most suitable for you is not so difficult. The main thing is for children to appear when you really want it. Love and be loved!