I haven't had my period for a month, am I pregnant?

Menstrual period is an important reference factor for women's physical and mental health. Menstruation is related to many aspects of women's reproductive health, such as qi and blood deficiency, uterine cold and so on. However, there are many factors that may cause women to not have their periods. It may be due to their dietary structure, which causes endocrine imbalance in women. Nowadays, female infertility is becoming more and more serious. Some people may not have menstruation during pregnancy, but some may have it. So, is it possible to be pregnant if you have not had menstruation for a month?

I haven't had my period for a month. Am I pregnant?

If your menstrual cycle is regular and you have a history of sexual intercourse, then if your period is delayed you should first rule out the possibility of early pregnancy. It is recommended that you perform a color Doppler ultrasound examination to confirm the diagnosis. The menstrual period may be delayed due to tension, stress, fatigue, anxiety, lack of rest, changes in living environment, changes in diet or use of medication.

If it only happens once in a while, it is recommended to relax; if delayed menstruation often occurs, it is recommended to measure female hormones, and consider it as caused by endocrine imbalance. It is recommended to use Chinese herbal medicines that promote blood circulation and remove blood stasis to regulate menstruation, and artificial cycle can also be used to regulate menstruation.

Generally, after pregnancy, it is not easy for women to have menstruation again. The menstrual period will not be restored until the baby is born. Some people think that they have their menstruation when they have bleeding during pregnancy. In fact, it is not their menstruation, but other conditions may occur. What conditions will cause bleeding after pregnancy?

1. Vaginal bleeding. Bleeding after pregnancy is often seen in the indication of cesarean section. Pregnancy is more likely to be complicated by uterine cysts or erosions. Uterine cancer can also cause vaginal bleeding. A very small number of menstrual periods during pregnancy can be understood as a physiological need after embryo implantation.

2. Threatened abortion: If a pregnancy test is positive during menopause and the woman is pregnant, and vaginal bleeding or backache or abdominal pain occurs at the same time, she should first consider threatened abortion, and also think about the possibility of ectopic pregnancy;

3. Cysts. Cysts are small bumps formed at the exit of the cervix. The blood flowing out of the female vagina is sometimes mixed with secretions from the uterus.

4. Ectopic pregnancy, because the sperm and egg do not implant in the uterine cavity, but implant in any part of the uterus outside the uterine cavity, causing vaginal bleeding;

5. Embryo. If the embryo falls or separates from the uterine wall, it will cause bleeding. If the embryo falls, the fetus will not be able to get oxygen and nutrients. At this time, the pregnant woman needs to take certain effective measures to see a doctor as soon as possible.

Changes in growth hormone during menstruation

After estrus, under the influence of the regular metabolism of uterine and ovarian steroid hormones, the uterine wall sheds regularly, resulting in vaginal bleeding, which is called menstruation. Therefore, the female reproductive cycle is also called the menstrual cycle. Physiologically, corresponding to the regular changes of the uterus and ovaries, the physiological cycle can be divided into the follicular phase, ovulation phase and follicular phase. The follicular phase begins with the onset of menstruation and lasts an average of 15 days; the ovulation phase is as short as 1 to 3 days; the follicular phase lasts 13 to 14 days and ends with the onset of menstruation in the next cycle. The normal menstrual cycle is between 21 and 35 days, the key lies in the length of the follicular phase.

The key growth hormones that regulate ovarian regularity are FSH and LH secreted by the pituitary gland. Before the onset of the follicular phase, the concentrations of FSH and LH in the blood drop to the lowest limit, and the LH/FSH ratio is slightly over 1. Starting from the day before menstrual bleeding, FSH gradually rises until the first half of this period, and then decreases to a certain extent. LH levels rise later but continue throughout the follicular phase, with the LH/FSH ratio increasing to 2 in the late phase.

Under FSH stimulation, the blood level of estradiol (E2) secreted by granulosa cells in the ovaries increases slightly in the first half of the follicular phase, and then increases rapidly, reaching a peak before ovulation. At this time, E2 is mainly metabolized by "mature follicles". In the first half of this period, the higher quality E2 and inhibitors regulate the hypothalamus, pituitary gland and adenohypophysis through negative feedback, causing the FSH level to gradually decrease in the middle and late stages. The most obvious feature of ovulation is that the LH concentration in the blood rises rapidly and reaches a peak, and FSH also reaches a smaller peak; before gonadotropin reaches its peak, a sawtooth E2 and GnRH metabolism peak can be seen. This indicates that the peak periods of FSH and LH can only occur under the interaction of the uterus, ovaries and hypothalamus-pituitary gland. After menstruation, due to the negative feedback inhibitory effect of progesterone (P4) and estradiol (E2) caused by progesterone on the hypothalamus-pituitary-adenohypophysis, blood FSH and LH gradually decrease and reach the minimum in the late follicular phase. The most notable feature of this period is that the metabolism of ovarian corpus luteum P4 can increase 10 times, while E2 only increases slightly. If pregnancy does not occur, progesterone levels decline. P4 and E2 drop sharply and reach the minimum in the later stage. Menstruation begins and the next follicular phase begins.