What There Is To Know

The rules (menstruation)

The life of a woman, from puberty to menopause, is punctuated by her hormonal cycles and therefore her periods. But what are they for? How does a menstrual cycle work ? What to do in case of painful periods, or abnormal bleeding ?

In this file, we will explain what happens in a woman's body during her period. We will also focus on the most common disorders experienced by some women during their menstruation before answering some practical questions about hygiene and the management of the rules on a daily basis: sex, sport and hygiene protection ... You go all know !

What is the rules?

At the end of each cycle, the uterus gets rid of the superficial layer of its mucosa (endometrium) which, having not received a fertilized ovum, causes a blood flow that usually lasts 3 to 7 days depending on the women.
And each month, the uterus prepares a new mucosa that can accommodate a fertilized egg (pregnancy) ... or not (rules).

The first rules appear with puberty, usually between 10 and 16 years. In France, the average age is 13 years old. The rules reflect the presence of an ovulation cycle and therefore the ability to procreate.

In other words, no ovulation, no rules. This is what happens during menopause, or if the contraceptive pill is taken without interruption.

Warning: the rules that occur between two pill pads are "artificial": they are due to the sudden drop in hormone levels, caused by stopping the use of the pill.

Calculate your ovulation date!

Our ovulation calendar allows you to quickly and easily calculate your ovulation date and fertility period. Want to know the best time to be pregnant? Do the math in a few clicks!


The word menstruation comes from the Latin mensis "month" (and the Greek mene, "the moon"), so it is perhaps this etymology that led to compare menstrual cycles to lunar cycles.

The beginning of a cycle is marked by the first day of the rules and ends on the first day of the next rules. It is composed of four phases:

  • Follicular phase: Significant production of estrogen and thickening of the uterine lining.
  • The ovulation phase: A mature egg, located in one of the ovaries, is expelled, and then moves into one of the fallopian tubes to the body of the uterus.
  • The progestogen phase: secretion of progesterone, and preparation of the uterus to receive the ovum.
  • The menstrual phase: If the egg is not fertilized, it will eventually disappear and the surplus uterine lining will be evacuated: these are the rules.

The cycle lasts quite often 28 days, but can vary from one woman to another, and or course of a woman's life. Sometimes shorter, the cycle lasts 21-22 days ... sometimes much longer up to 34-35 days.

To better understand, here is an overview of the woman's internal sexual organs:

You want to react, to give your testimony or to ask a question? See you in our FORUMS Gynecology or A doctor answers you !

Read also :

Learn more about the menstrual cycle
The follicular phase and ovarian stimulation: how is it going?
Female genitals
Questions gynéco: All our articles on the health of women

Popular Posts

Category What There Is To Know, Next Article

The menstrual cycle: temperature changes - What There Is To Know
What There Is To Know

The menstrual cycle: temperature changes

In women, a change in temperature is observed during the menstrual cycle: The day of ovulation is the lowest temperature in the cycle. After ovulation, the body temperature increases by about 0.5 ° C during the luteal phase. Then the temperature will decrease, if there has not been fertilization (meeting between an egg + spermatozoon).
Read More
The penis: The pleasure zones - What There Is To Know
What There Is To Know

The penis: The pleasure zones

The glans is the most sensitive part of the penis; the sensations there are more or less strong according to the zones. It is on the brake that the pleasure sensors are the most numerous; next comes the crown of the glans (border between the skin of the penis and the pink mucous membrane.) Often forgotten, the area of ​​the spongy body is also very sensitive to the caresses supported, it is the zone of the underside of the penis, at the level of the stem, less hard than the top of the penis at erection. Di
Read More
Tubal ligation: And if we change our mind? - What There Is To Know
What There Is To Know

Tubal ligation: And if we change our mind?

Tubal ligation is a permanent and permanent method of contraception. If you want to have more children in the future, it is better to use reversible contraception. If you have had tubal ligation and want to become pregnant again, the appropriate technique would be deligitation. But beware, the result is almost zero
Read More