To reduce the risk of fetal pathology, complications during pregnancy and childbirth desired pregnancy should be planned.
When planning pregnancy, the couple runs a survey that if necessary, be examined prior to conception.

Planning for pregnancy - that it is important to know about conception

Which days of possible conception?
Conception is possible when the body matures female egg. Exit eggs from ovarian called ovulation. In the 28-day menstrual cycle that occurs on average 12-16 day cycle (from the first day of menstruation).

How do I know when the «dangerous» days?
If the woman is healthy, and she has no hormonal changes in the background, the body’s readiness to conceive clearly indicate the provision of sexual ways - for 1-2 days before ovulation, they are abundant, transparent and slimy are extending, that is look like raw egg white. In addition, there are tests that determine ovulation in a given menstrual cycle. They are a special strip of plastic, which should be omitted in the tank with urine. When a test 2 bright strips ovulation can be expected in the next day (after 16-28 hours).
Measurement of basal temperature - is also one of the methods of determining ovulation. It is a daily measurement of temperature in the rectum morning, at the same time, not getting up from bed. Since the beginning of the cycle temperature is at a level to 37 degrees, and since the ripening eggs increased by 0,3-0,5 degrees and remains almost until the day of the next menstruation. Data measuring the temperature shall be plotted on the vertical axis which delayed the temperature and the horizontal - day menstrual cycle. The graph also points to the days of sexual proximity. Many women while carefully managed schedule basal temperature can be revealed that the rise in temperature observed short of its recession. Under this method, the time of ovulation is considered for 1 / 2 days to improve the basal temperature, or between a recession and the beginning of her recovery. Schedule of high temperature should be from a smooth plateau - that is, lack reduce its over 11-16 days, he said the normal work of the ovaries and a full ovulation. If the figures «up-down», they can not reliably assess the menstrual cycle as this is a sign of hormone deficiency, which requires treatment by a doctor.

The most accurate methods of determining ovulation - this ultrasound study (when measurements of bubbles, in which eggs mature during the menstrual cycle), determine the level of hormones in the blood (LH, progesterone).

Are the remaining days of the cycle safe?
Human sperm could maintain its fecundating ability of female genital tract for several days (2 to 5), so unprotected sexual intercourse for 3-5 days before ovulation can lead to pregnancy. The truth is that the likelihood of fertilization is not more than 10%, but the risk did not. Egg is capable of insemination within 1 day after the release of the ovary, so if this time it did not, other times up to menstruation can be considered safe. Thus, the maximum safe days for unprotected sex with a standard cycle can take days, from 18 to 28.

Would it unprotected sex during menstruation?
Yes, in the first days of menstrual cycle, the likelihood of pregnancy is minimal. If the contact took place in the 5-6 day cycle and later, then the likelihood exists (see previous paragraph).

Perhaps there at conception «plan» sex unborn child?
There is the theory of the possibility of planning sex fetus based on different activity and the life of sperm carrying the Y-chromosome (birth to a boy) and do not have it (giving birth girls). When sexual vicinity on the day of ovulation (egg release from the ovary) have higher levels of the birth of boys, while the proximity of 4-6 days before or after 2 days after ovulation increases the probability of the birth of girls. Remember that this is all the same theory, and 100% guarantee method does not. How to determine ovulation mentioned above.

How can the pregnancy occurred there?
There are special tests that determine the level of urinary-hCG - hormone that is produced during pregnancy. The oldest term, which can detect the pregnancy - is expected day of menstruation (or delay of 1-2 days). Prior to that, another hormone produced very little, and define it in standard urine tests are not available.

Sometimes there that the tests wrong?
Yes, unfortunately, that happens. First of all, it depends on the quality of dough (cheap options for lead more often), as well as the reason for the false results may be inflammatory process, severe fatigue or severe disease organism, where the products of other substances released into the pretend-hCG. A more accurate method of determining in-hCG in the blood, it is more sensitive, can confirm the presence of pregnancy in the earliest time (but not earlier than 1 day late!). Blood tests taken from the vein.

Can I prevent unwanted pregnancies after unprotected intercourse?
Yes. There are so-called funds of emergency contraception. These preparations containing large doses of hormones. The mechanism of action is that after applying the drug stop ovulation occurs, and in the shell, lining the uterus, changes occur, affecting the attachment of eggs. Drugs must be taken within the next 96 hours after unprotected intercourse or within 72 hours after the act, and within 12 hours - re-admission. After receiving the drug after some time there hemorrhagic allocation of genital tract. Sometimes they are abundant in nature, you should consult a doctor.
The effectiveness of drugs in the correct application of around 98%. As a permanent contraceptive method, this method is not suitable, because leads to serious violations of menstrual cycle and violations fat exchange. For the selection of regular contraception need to turn to the gynecologist.