What is the reason for the delay of 12 days?

We all know that menstruation is a unique physiological reaction in the female body. Although menstruation can bring various troubles to the female body, it also brings some benefits to the female body. Therefore, every woman should face menstruation squarely and not be particularly troubled by menstruation. So the question is, what is the reason for the delay of 12 days?

Delayed menstruation is the most common menstrual disorder. Many friends do not take it seriously, which is very dangerous because if the cause and conditioning method are not found in time, it will further affect women's health. If menstruation is delayed for more than a certain period of time, it will lead to irregular menstruation.

Experts say that if the menstruation is delayed by less than ten days, it is not a big deal. If the menstruation is delayed by more than ten days, female friends should go to the hospital for a detailed examination. Under normal circumstances, the menstrual cycle is 28 to 30 days. It is normal to be early or late by about ten days, but if it exceeds this time, it is abnormal. Progesterone is a natural progestin secreted by the corpus luteum of the ovary. It has a significant morphological effect on the estrogen-stimulated endometrium in the body and is necessary for maintaining pregnancy. Progesterone is clinically used for reactive diagnosis of amenorrhea or causes of amenorrhea, such as threatened abortion and habitual abortion. Progesterone, also known as progesterone, is a progestin. It is effective in artificially adjusting the menstrual cycle, but progesterone is not a panacea.

So, progesterone can induce menstruation. Progesterone is a hormone specific to women, secreted by the ovaries. The basic concept is that when the ovary ovulates in the middle of the menstrual cycle, the follicle that releases the egg will form a corpus luteum, which will secrete progesterone. The progesterone will cause the endometrium to enter the secretory phase and maintain its thickness until the menstrual period comes, when the corpus luteum atrophies and the progesterone concentration in the blood drops sharply, causing the endometrium to shed and form menstruation. Progesterone is of great significance to female pregnancy and affects menstruation by affecting the stimulation of estrogen on the endometrium. In the later stages of menstruation, progesterone promotes the growth of glands in the uterine mucosa and the thickening of the endometrium to prepare for the implantation of the fertilized egg. If the progesterone level is low, menstruation will be delayed.