Hormones work to prepare women for pregnancy, and menstruation occurs every month. It lasts from about 10 years old for early people to about 50 years old for long people.

One egg is released each month from either the left or right ovary. After that, the uterus prepares a fluffy bed to receive the fertilized egg. This is called the endometrium. If the fertilized egg implants, it becomes a pregnancy, but if it is not fertilized, the lining of the uterus sheds and is expelled with blood.
This is "menstruation".

This menstruation occurs in cycles of approximately 25 to 38 days.
Menstruation is affected by the amount of female hormones estrogen (follicle hormone) and progesterone (luteinizing hormone).
→What are female hormones?

As progesterone levels begin to rise, body temperature rises and menstruation begins if pregnancy does not occur at this time.

Female hormones are easily influenced by physical condition, so there may be a delay of a few days, but if there is a delay of more than a week from the expected date, there is a possibility that you are pregnant or have some trouble. See a gynecologist to find out the cause.

Thus, menstruation is an important body system that tells whether a woman is ready to conceive.

You will spend more than half of your life together. Let's get along well with symptoms and worries related to menstruation.

Reference: Japan Association of Obstetricians and Gynecologists

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