There are several methods of definition of date of an ovulation. So, it is possible to take basal temperature or to watch the feelings. And it is possible to use the calendar or special devices.
Pregnancy can occur only in certain time, namely in the period of an ovulation. At this stage there is a maturing of an ovum, and it means that it is ready to fertilization. That is to increase conception probability, it is necessary to calculate when there is an ovulation. And it is possible to calculate such date in several ways.
The first way of definition of date of an ovulation – calendar. It is the simplest, but at the same time the most doubtful. It is considered that duration of a menstrual cycle of the woman averages 24-30 days. The beginning of a cycle it is considered to be the first day of periods, and the end – the last day before the following periods. If a cycle regular, then the ovulation has to come in 11-14 days prior to the beginning of a cycle. That is to calculate this date, it is necessary monthly to count of estimated day of the beginning 11-14 days. But it is worth remembering that any problems with health can provoke failure of a menstrual cycle. And in this case the calendar method will not yield exact and reliable results.
The stress, sharp change of climate, cold, strict diet, intake of some medicines and many other things can provoke failure of a menstrual cycle.
The second way of calculation of an ovulation – measurement of basal temperature. So, in the first 12-14 days temperature will average 36.3-36.7 degrees. Before an ovulation it can reach the minimum. Then under the influence of hormone of progesterone which causes maturing of an ovum temperature will increase up to 37.1-37.2 degrees. Then it can fall a little, but will be steadily raised to the end of a menstrual cycle. It is necessary to take temperature in a special way. The thermometer is located in a rectum of a sutr right after awakening. To get out of a bed and to make any sharp movements does not follow. That with an accuracy to define fluctuations and sharp changes, it is necessary to keep the schedule and to consider data at least for the last three months. Otherwise results will not be exact. To make the schedule, draw the system of coordinates and on abscissa axis celebrate days of a cycle, and on ordinate axis – temperature. You take measurements daily and do marks on graphics.
Dreams of erotic character, inflammatory diseases of bodies of a small pelvis and also sharp infections can cause increase in basal temperature.
The most reliable and at the same time the simple method of definition of day of an ovulation is use of special tests. The test contains special indicator substance which allows to define amount of special women's hormones. So, progesterone is responsible for maturing, and during an ovulation its quantity as much as possible. This hormone contains in urine and when it gets on the test, the indicator will help to reveal increase in level of progesterone, that is to define that the ovulation came. Try to listen to the organism. In the period of an ovulation there can be such symptoms as change of quantity and consistence of vaginal allocations, the aching pains in the lower part of a stomach and also increase in sexual inclination. For obtaining exact data it is the best of all to combine several methods of calculation of an ovulation.