When is the fertile period for girls?

When is the fertile period for girls? The so-called fertile period for girls refers to the ovulation period. The process of conception is the combination of sperm and egg, so pregnancy is possible only during the ovulation period, but there are also special circumstances. Girls need to pay attention to some issues during their pregnancy period. If they hope for good luck, they must be prepared for conception, but if they do not want to get pregnant, they must take contraceptive measures.

The female reproductive cycle includes the ovarian cycle and the menstrual cycle. For women with regular menstruation, the start of the ovarian cycle and the menstrual cycle are synchronized, that is, from the first day of menstruation to the day before the next menstruation. Clinically, the day when menstruation begins is usually called the first day of the reproductive cycle. The various reproductive events that occur during this reproductive cycle are timed according to the first day. Since the menstrual period of most women is about 28 days, the following will use the 28-day reproductive cycle as an example to illustrate the timing of various reproductive events.

The proliferative phase in the menstrual cycle and the follicular phase in the ovarian cycle are both 14 days. In the later stage of the follicular phase, the estrogen secreted by the mature follicles in the ovaries continues to increase. Under the stimulation of high levels of estrogen, the luteinizing hormone and follicular estrogen secreted by the pituitary gland increase significantly, are released in large quantities and are secreted in peak amounts. In particular, the peak secretion of luteinizing hormone can induce the final maturation of the egg and lead to the loosening and eventual rupture of the follicle wall, followed by the release of the egg.

Ovulation usually occurs 36 hours after the peak secretion of luteinizing hormone or 10 to 12 hours after the secretion of luteinizing hormone reaches its peak. Ovulation occurs on the 14th day of the reproductive cycle.

The time from ovulation to the next menstruation is 14 days, which is the luteal phase of the ovarian cycle and the proliferative phase of the menstrual cycle. It is worth noting that menstruation occurs on the 14th day after ovulation. This time interval is relatively constant and is not affected by changes in the length of the female reproductive cycle. Therefore, based on this rule, we can predict when conception is possible in each reproductive cycle, that is, when is the most fertile period. It is currently known that sperm can survive in the female reproductive tract for 72 hours, while the egg can only be fertilized within 12 to 24 hours after ovulation. Therefore, sexual intercourse within 3 days before expected ovulation and within 1 day after ovulation can cause pregnancy, because during this period, the sperm has a high chance of meeting the released egg in the woman's fallopian tube, thereby fertilizing the egg.

That is to say, for women with a reproductive cycle of 28 days, the 11th to 15th day is the most fertile period. Obviously, during the most fertile period, the closer the sexual intercourse occurs to the ovulation period, the greater the chance of the sperm entering the fallopian tube and meeting the egg, and the higher the chance of the woman becoming pregnant. Sometimes, sexual intercourse that occurs very close to your most fertile period can result in conception. On the one hand, this is because the survival period of the male's sperm or the female's egg is longer than expected, and on the other hand, the female's ovulation time may be earlier or later than expected. Of course, for couples who want children, pregnancy is not a problem at this time.

In fact, the length of a woman's menstrual cycle varies from person to person, and the length of each woman's cycle is rarely constant. Generally speaking, a menstrual cycle of 24 to 35 days is normal and there is no need to worry too much about it. Only when the menstrual cycle is shorter or longer than the above time, it is necessary to consider whether the woman may have infertility problems.

The fertile period for girls is about 15 days after menstruation. During this period, there are some issues that need attention. The conception period is also called the dangerous period, so you need to pay attention to whether you can get pregnant. If you don’t want to get pregnant, you must eliminate the chance of getting pregnant and not let yourself get pregnant.