Calendar of conception - is inaccurate, but popular - Menstrual Cycle

The menstrual cycle and conception

For none of the women is not a secret determination that the menstrual cycle and conception directly linked. Everyone knows that on how the reproductive system of a woman depends on her ability to bear children. The menstrual cycle - is not only visual changes and sensations in the body, which is experiencing the fairer sex every month.

The menstrual cycle - a complex hormonal upheavals that focus on oocyte maturation and conception. In addition, all without exception, know that any violation of the menstrual cycle affects the possibility of fertilization of a mature egg and is often the cause of infertility.

Duration of the menstrual cycle - figure individual, but the average menstrual cycle lasts twenty-eight days. Shorter or longer menstrual cycles lasting from twenty-four to thirty-five days, and absolutely normal.

Menstrual cycle - the period from the first day of menstruation until the day before the start of the next menstruation. The first menstrual cycle begins in girls in the ten or twelve years, and the last menstrual cycle ends at the fifty-fifty-five years after reaching menopause. On average, from twelve to fifty-two years, the number of cycles of the order of four hundred eighty - less if the woman to bear children.

What happens during the menstrual cycle

To understand spetsifitsiku menstrual cycle, you need to know about the constituent elements of the female reproductive system. The reproductive system includes:

• Two ovary in which mature ova
• The uterus, which is attached to the wall of the fertilized egg - the embryo develops in the womb
• The two fallopian tubes that connect the ovaries to the uterus
• The cervix is ​​the lower part of the uterus that connects to the vagina

On the duration and during the menstrual cycle affect hormones. During each cycle, improving hormone estrogen Estrogen - the key to bone health   activates the process of egg maturation in the ovaries and ovulation - that is, the output ready to fertilize an egg from the ovary. The inner lining of the uterus thickens, preparing for pregnancy.

In the fallopian tube the egg enters the uterus. If conception does not occur, hormone levels of estrogen and progesterone decreases, the mucous membrane of the uterus peels off and leaves the body during menstruation.

The normal menstrual cycle

The duration of each cycle is determined by the first day of the last menstrual period to the first day of the next. The average normal menstrual cycle is 28 days. Menstrual Cycle must meet the following criteria:

• Cycle time is 21-35 days;
• fluctuations of the menstrual cycle each month shall not exceed five days;
• length of menstrual bleeding is three to seven days;
• the total amount of blood loss during menstruation should not exceed three to five tablespoons of blood (50-80 ml).

Menstrual period

The first day of the menstrual period is the first day of a new menstrual cycle. On average, the menstrual period lasts from three to seven days, during which a woman loses only three to five tablespoons of blood. Some women during menstruation there are more intense menstrual bleeding, which, however, can be normalized using a variety of methods.

The phases of the menstrual cycle

In the menstrual cycle, identified a number of periods. These include:

• The first phase of the cycle or follicular

The first phase, when estrogen she's twenty-eight day menstrual cycle lasts about fourteen - sixteen days. During this period, under the influence of FSH, which is synthesized by the pituitary gland, ovaries begin to form hard estrogens. Under the influence of the latter in the sex glands begin to mature follicles, among which is determined by the dominant, in which the egg matures. At the maximum development of the main estrogen follicle bursts and the egg is released from the ovary and enters the fallopian tube. High concentrations of estrogen stimulates the release of luteinizing hormone by the action of which begins to form progesterone Progesterone - norm and pathology . In addition, estrogens have an effect on the cervical mucus, causing its thinning and increased secretion (which creates favorable conditions for the penetration of sperm into the uterus and subsequent fertilization). Estrogens affect on the endometrium, causing structural changes therein.

• The second or ovulatory phase of the cycle

Ovulatory phase of the cycle, as it becomes obvious from the title, is accompanied by ovulation Ovulation - How to determine as accurately as possible?   or the release of an egg from the ruptured follicle. It comes about in the middle of the menstrual cycle and lasts only a day. It should be noted that the life expectancy of the egg is 24 hours, a maximum of 48. This day is favorable for conception. But do not forget that sperm maintain their activity throughout the week, so the sexual act, which was made in about seven days prior to ovulation, may be a "culprit" pregnancy.

• The third, or luteal phase

The third phase is also called progesterone, since all changes that take place during this period in the uterus and the ovaries are controlled by progesterone - the hormone of the corpus luteum. Under the influence of progesterone basal (rectal) temperature rise (above 37 degrees) in the lining of the uterus is completed restructuring, which aims to prepare the uterus for implantation of a fertilized egg. And progesterone prevents the further maturation of follicles in the ovaries, that is, making it impossible to access the second ovum after the event conception.

Signs of Ovulation

Ovulation - the output is ready to fertilize an egg from the ovary. After ovulation, the egg, there are only twenty-four hours, during which can be fertilized by sperm. Spermatozoa remain active for much longer periods of time - up to seven days.

The following signs of ovulation can help a woman with a regular menstrual cycle to determine favorable days for conception:

• small nagging pains in the abdomen Abdominal pain: when to sound the alarm? ;
• increase of the cervical mucus (which becomes similar to egg protein);
• bloating and breast tenderness;
• perhaps once bleeding (as blood stains on underwear);
• flatulence;
• enhancement of sexual desire;
• increase in basal body temperature.

Ovulation and conception

Theoretically, a woman can get pregnant within a very short period of time after ovulation. It is difficult to pinpoint when ovulation has occurred - unless, of course, do not follow the menstrual cycle. For most women, ovulation usually occurs ten to sixteen days before the next menstrual period.

Tracking the menstrual cycle helps to identify ovulation and prevent pregnancy (or, conversely, to increase the chances of conception). The main methods for determining ovulation include tracking changes in vaginal discharge, daily measurement of basal body temperature, calendaring menstruation. Vaginal discharge changes during the menstrual cycle. During ovulation, they become less dense and viscous, reminding the consistency of raw egg white.