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Menstruation starts at a different time for everybody. A girl can start menstruating between the ages of nine and sixteen - although it is rare to start as early as nine. Once a girl has started her period, it will come once a month for around three to seven days.

At first they can be quite irregular but tend to fall into a pattern as time goes on. There are several factors which can affect the regularity of periods such as pregnancy, extreme weight loss and certain types of Birth Control.

A woman generally has her period for around forty years, but that varies from person to person.

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βˆ™ 11y ago
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βˆ™ 5mo ago

Menstruation typically occurs once a month in girls and women who are not pregnant. It usually starts around puberty and continues until menopause, which usually happens in the late 40s or early 50s. The menstrual cycle is controlled by hormones and involves the shedding of the uterine lining, resulting in bleeding that lasts for a few days.

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βˆ™ 13y ago

usually once a month, and it lasts about a week

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Q: When does menstruation happens?
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Is the egg released during menstruation?

No, the egg is not released during menstruation. Menstruation occurs when the lining of the uterus sheds because fertilization did not occur. The egg is released during ovulation, which typically happens around the middle of a woman's menstrual cycle.


Why does menstruation takes place?

Menstruation occurs when the lining of the uterus sheds if no pregnancy occurs. This happens because levels of estrogen and progesterone drop, causing the blood vessels in the uterus to constrict and the lining to be shed.


What happens to an egg if it is not fertilized by the time it reaches the uterus?

If an egg is not fertilized by the time it reaches the uterus, it will disintegrate and be absorbed by the body. The uterus will shed its lining during menstruation, which includes the unfertilized egg.


What happens in the ovaries during menstruation?

During menstruation, the ovaries do not play a direct role. Menstruation is primarily controlled by hormonal changes in the uterus. The ovaries release an egg during ovulation, which typically occurs around the middle of the menstrual cycle. If the egg is not fertilized, hormone levels drop, leading to the shedding of the uterine lining and the start of menstruation.


What happens if the fertilized egg does not implant?

If the fertilized egg does not implant in the uterus, it will not develop further and will be flushed out of the body during menstruation. This often happens without the woman even realizing she was briefly pregnant.

Related questions

If an egg isn't fertillized. what happens to the egg?

it is lost in menstruation


What event happens two weeks before menstruation?

ovulation


What happens to estrogen progesterone levels prior to menstruation?

they increased


What happens during the first stage of the menstrual cycle?

menstruation


Is anal menstruation normal?

Anal bleeding is usually caused by hemorrhoids, not by menstruation. It could also be a symptom of a more serious gastro-intestinal illness, but it is never menstruation, which happens in a different orifice entirely.


What happens Shortly before menstruation?

Blood levels of estrogen and progesterone decrease.


Why do you get menstruation?

It's a normal thing for every female. But some get irregular menstruation which means she might have a problem in her reproductive system which should be checked by a doctor. Why do you get menstruation? It's a sign which means you are ready to be pregnant. And it happens when a girl becomes mature and got through puberty except menstruation.


What happens to the unfertilized eggs in the human female?

They are absorbed and later passed out during menstruation.


What the age the menstruation stop?

Menopause usually happens betwenn the ages of 45 and 55.


Is the egg released during menstruation?

No, the egg is not released during menstruation. Menstruation occurs when the lining of the uterus sheds because fertilization did not occur. The egg is released during ovulation, which typically happens around the middle of a woman's menstrual cycle.


What happens a week after menstrual cycle?

Menstrual cycle refers to the entire reproductive cycle, starting during menstruation - there is no 'after the menstrual cycle' but I think you might mean after menstruation. After menstruation the cycle starts again, typically a woman will be fertile around a week after menstruation so her body will produce fertile cervical mucus and she will ovulate.


Stage in a girl's life when menstruation usually starts?

Menstruation usually starts after the breasts have started developing. It normally happens from the ages of 8-16. It will be obvious that a girl is getting near womanhood.