Is it normal to have no period after 3 days?

In daily life, many women have too much or too little menstrual flow. Generally, women's menstrual period is about one week. Some special women have little menstrual flow, and it is gone in 3 days. There are many reasons for this. Endocrine disorders after taking contraceptives for a long time can also cause delayed menstruation, or psychological factors such as nervous tension, excessive stress, environmental changes, and some diseases that affect the endocrine system.

Question 1

Menstruation occurs: Women's internal reproductive organs are composed of ovaries, uterus, and fallopian tubes. The main function of the ovaries is to produce eggs and synthesize ovarian hormones, while the uterus and fallopian tubes are reproductive organs. The ovaries contain tens of thousands of follicles, each of which contains one egg.

Question 2

Before puberty, the follicles are essentially non-functional. During puberty, under the action of gonadotropin from the anterior pituitary gland, immature follicles gradually develop and synthesize estrogen. When the follicle matures and ovulates, the follicle wall collapses, the cells become larger and yellower, and are called the corpus luteum. It synthesizes estrogen and produces progesterone.

Question 3

As the ovaries change, the endometrium is also affected and undergoes corresponding cyclical changes. Estrogen causes the endometrium to thicken, the endometrial cells to increase in number and size, and the arterioles in the interstitium to become more tortuous and spiral, which is called the proliferative endometrium. After ovulation, due to the combined effects of estrogen and progesterone, the endometrium becomes edematous, the glands produce a large amount of mucus and glycogen, and the thickness of the endometrium increases from 1 mm to 6 mm, which is called the secretory endometrium.

Question 4

If the egg released at this time is fertilized, the fertilized egg is transported to the uterus through the fallopian tube for development, which is called pregnancy. The pregnancy tissue synthesizes a chorionic gonadotropin, which supports the continued development of the corpus luteum of the ovary. If the egg is not fertilized, the corpus luteum will atrophy and stop secreting estrogen and progesterone about 14 days after ovulation. At this time, the blood vessels in the endometrium will contract, the endometrium will necrotize and fall off, causing bleeding and forming menstruation.