In translation from Latin of fertilis means "fertile, prolific". Fertility of the woman is defined by her ability and readiness for conception, incubation and the child's birth. From the demographic point of view, the reproductive age of the woman makes from 15 to 49 years though social norms and medical recommendations narrow these indicators a little. This period is determined by the nature. At the same time, how to dispose of fertility - depends first of all on people.
That mean fertile days
Some days of a monthly cycle which ovulations precede and finish it, are called fertile. The period, optimum for fertilization, includes five days preceding and day of its approach. Ability to in such days at the woman is maximum. The period consisting of these several days is called as the fertile period, or "a fertility window".
Ovulation – a condition of a female organism when the ovum ready to fertilization leaves an ovary follicle in a uterine tube. It is considered that the greatest probability to become pregnant exists in one day prior to an ovulation. Thus viability of spermatozoa in a vagina makes some hours, in a uterus neck - about 5 days. The ovum after an ovulation keeps ability to fertilization within a day.
The average duration of a female monthly cycle makes 28 days, to the middle of a monthly cycle there comes the ovulation.
These data are average, some deviations in this or that party are rather often observed. There are some methods of definition of days, favorable for conception.
Is suitable for application in case of a regular monthly cycle. It will be required to celebrate regularly in a calendar initial and final dates of periods that by simple calculations to define a probable ovulation and fertile days. It should be noted that preliminary supervision of a menstrual cycle at least within half a year is required. Statistically, efficiency of a calendar method makes 50-60%.
Let's give algorithm for calculation of fertile days (Ogino-Knaus's method):
- it is necessary to analyse the previous menstrual cycles within several months, to determine duration of the shortest and most long monthly;
- having taken away from number of days of the longest periods of 11 days, you receive the last fertile day;
- the first day of fertility decides on the help of subtraction from number of days of the shortest periods of 18 days.
In case of irregular monthly cycles, by means of similar calculations date of an ovulation cannot be predicted. The calendar method yields very approximate results – therefore, methods of calculation need to be combined with supervision over the health. There are some signs, characteristic for approach of an ovulation. Can treat them:
- the insignificant aching ovary pains, tension in the bottom of a stomach (these feelings accompany an ovum exit from an ovary);
- some women note spasms of a stomach and ;
- the breast becomes more sensitive because of the hormonal splash preparing an organism for probable pregnancy;
- strengthening of a sexual inclination – statistically, during the ovulyatorny period the woman unconsciously changes behavior and a manner of communication, and also clothes for more sexual. It is caused by subconscious aspiration of the woman to conception.
Consists in tracking of body temperature during a monthly cycle. The matter is that before an ovulation at most of women it slightly raises. Fluctuations make from 0,2 to 0,6 °C. It is necessary to perform measurement of bazalny temperature (in back pass) every day, at the same time. It is recommended to take measurements in the mornings - before you got up. The taken measurements need to be written down daily. At regular supervision over bazalny temperature, and also creation of the schedule of fluctuations throughout several cycles - this method is rather informative.
Special test for an ovulation
These tests are on sale in drugstores, at a set usually there are five strips. It is recommended to begin testing in 5-6 days prior to an estimated ovulation. The principle of action the same, as at tests for pregnancy, is only subject to identification not a horionichesky gonadotrophin, but a lyuteiniziruyushchy hormone. First of all, it is necessary to study the instruction carefully. It is recommended to hold testing every day approximately at the same time, with frequency one-two times per day. It will be required to collect urine in pure ware, to ship in it for some time a test strip - and then some minutes to wait before receiving result. Before an ovulation there is a sharp emission of a lyuteiniziruyushchy hormone that is successfully traced by means of this dough. The positive result confirms the highest fertility directly at the time of carrying out dough, that is full readiness of the woman for conception in the next days. Efficiency of this dough when planning pregnancy rather high.
Definition of the fertile period on nature of allocations
Some women successfully apply a method of supervision over vaginal . The neck of a uterus makes a special secret, so-called tservikalny slime - for maintenance of viability of spermatozoa in sexual ways. With approach of an ovulation of the characteristic of the made secret (a consistence and number of allocations) significantly change.
During a monthly cycle of the woman the following changes of a condition of cervical (tservikalny) slime are observed:
- "dry" days – this period begins after the termination of menstrual bleeding, duration some days. At this time allocations visually are absent, a mucous membrane of a vagina to the touch the dry;
- further with approach of an ovulation sticky, sticky transparent allocations are observed – fertile days begin;
- there are allocations in the form of the viscous viscous slime reminding protein of crude egg that testifies to achievement of the highest level of fertility - proximity of arrival of an ovulation, and also about its approach.
This method is simple in use, has no side effects. Treat shortcomings: rather high error, low contraceptive effect. At some diseases accompanied with change of nature of vaginal allocations, this method is inefficient.
There is rather large number of signs of approach of fertile days, and also methods of their tracking. The knowledge of the physiology - in particular, signs of approach of fertile days, will help you to control time favorable for conception - or to avoid undesirable pregnancy if it does not include in your plans.