Fertile and barren days

How to count fertile and infertile days?

Women who know their fertile and infertile days can plan their desired pregnancy better and faster. Also, if they want a baby, they can follow some tips, which have worked for many couples. If you want a baby, it is recommended that you abstain from sexual intercourse before the beginning of fertile days, and to compensate for all that during fertile days. It is also recommended that after ejaculation, the woman stays in a lying position for the next 15 minutes and during that time keeps the pillow under her pelvis.

To calculate fertile days with as much certainty as possible, you must start recording the beginning and end, that is, the duration of menstruation in the last six months.

If you are one of the women with a normal cycle lasting 28 days, your fertile days are from the 8th to the 19th day, starting with the first day of menstruation. In case the length of your cycles differs, then subtract 11 days from the longest recorded cycle and thus get the last fertile day. Subtract 18 days from the shortest recorded cycle and you will get the beginning of fertile days.

Ovulation and fertile days

The monthly cycle is measured from the first day of menstruation to the first day of the next menstruation. As we have already written, the normal length of menstruation is between 28 and 30 days, although it can last longer or shorter, which again depends on the woman.

The menstrual cycle is divided into four phases - the menstrual cycle, the phase before ovulation, ovulation, and the phase after ovulation.

Thus, in the pre-ovulation phase, the hypothalamus signals the pituitary gland to begin secreting follicle-stimulating hormone (FSH). This hormone stimulates the development of mature eggs, of which only one will be the right one, that is, the one that will mature in the ovary and move through the fallopian tube into the uterus.

During maturation, estrogen is secreted, and a message is sent to the hypothalamus and pituitary gland that there is a mature egg cell, which stimulates the secretion of luteinizing hormone (LH). After that, between the 24th and 36th hour from the beginning of the secretion of this hormone, the mature egg cell will separate from the ovary and will move towards the uterus via the fallopian tube. This period is called the ovulation period. Now the chances of conceiving are greatest.

In the post-ovulation phase or the luteal phase, the follicle from which the mature egg cell originated begins to secrete progesterone. It helps prepare the uterus to receive a fertilized egg. In the next 14 to 16 days, the level of this hormone in the body will be increased for the body to prepare for pregnancy.

If pregnancy does not occur, the level of progesterone decreases, and the mature egg is expelled together with the mucous membrane of the uterus, which is actually menstruation. From that moment comes a new monthly cycle. Some of the symptoms of ovulation are sore breasts, changes in mood, increased libido, and mild pain in the lower abdomen.

Ovulation and conception

Most gynecologists calculate the beginning of pregnancy based on the first day of the last cycle. This is called the "menstrual age" and usually begins two weeks before the bleeding starts. In women with a regular cycle, ie a cycle every 28 or 30 days, ovulation occurs on the 14th day from the first day of the last menstruation.

There are two phases of the cycle. The first phase is calculated from the first day of the last menstruation, while the second phase of the cycle is called from ovulation to the next menstruation. Both phases last equally.

The first phase is called the estrogen phase, and the second phase is called the progesterone phase. In the first phase, the mucous membrane rejected by menstruation, under the influence of estrogenic hormones of the ovaries, is first compensated, and then it swells and reaches a maximum thickness of seven millimeters.

After ovulation, a yellow telos of the ovarian follicle is created, which secretes both estrogenic hormones and progesterone. In this case, progesterone prevents further swelling of the mucous membrane and prepares the mucous membrane for accepting the fertilized egg.

If fertilization does not occur around the 26th day of the cycle, the secretion of estrogen and progesterone decreases, which causes rejection of the uterine mucosa and is manifested by bleeding.

If the egg is fertilized, the woman remains pregnant. When a sperm enters the egg, its protein coat changes and thus prevents other sperm from penetrating inside. At the time of fertilization, your baby's genetic code is formed, including sex.

Since the mother carries only X chromosomes from the sperm, it depends on which sex the child will be if the X chromosome penetrates then you will get a girl, and otherwise, if it penetrates the Y chromosome you will have a boy.

In the next 24 hours after fertilization, the egg begins with accelerated cell division. The fertilized egg or zygote enters the uterus where its next task is to attach to the endometrium. Then the zygote becomes a small spherical cell. Some women may experience mild discomfort such as bleeding during this period because the endometrium becomes stronger and the cervix closes. Your baby is called an embryo for eight weeks, after which it will be called a fetus until the end of pregnancy.