My chest has been swollen for half a month and I haven't had my period yet

If you have breast swelling and no menstruation for half a month, it may be because of pregnancy. Breast swelling and amenorrhea will occur in the early stages of pregnancy. This is a normal physiological phenomenon. Women need to be prepared for the pregnancy process and provide the best living environment for the child's development. Breast swelling usually occurs during pregnancy or menstruation, because the increase in estrogen stimulates the development of the breasts to prepare for lactation.

1. Missed menstruation

If your periods have always been regular, but this time your period didn't come on time, you may have already taken an early pregnancy self-test before you noticed the above symptoms. But if your periods are irregular or you don't remember your periods, early pregnancy symptoms like nausea, breast tenderness, and frequent bathroom breaks may indicate you're pregnant before you realize you're missing your period.

2. Basal body temperature remains high

In the early stages of pregnancy, the physical symptoms are not obvious, but one thing is that the basal body temperature remains high. If you track your basal body temperature and find that it is high for 18 consecutive days, you are likely pregnant.

3. Breasts become larger and more sensitive

One of the early signs of pregnancy is tender, sore breasts, which is caused by your increased hormone levels. This bloating and cramping feeling is very similar to what you feel before your period, only more intense. This discomfort will improve significantly after 3 months of pregnancy, when your body has adapted to the hormonal changes during pregnancy.

4. Fatigue

Do you suddenly feel tired or even exhausted? No one knows exactly what causes fatigue in early pregnancy, but rapidly increasing levels of progesterone (also called progesterone) may make you feel extra sleepy.

Once you reach the second trimester, you'll start to feel more energetic than you did in the first trimester, but fatigue usually returns toward the end of your pregnancy. This is because your weight will increase significantly during this time, and the common discomforts of pregnancy will also affect the quality of your sleep at night.

5. Nausea or vomiting

If you're like most women, morning sickness won't start until about a month after you conceive. A lucky few women go their entire pregnancy without experiencing this symptom. However, some women will start to feel nauseous before this. Morning sickness does not only occur in the morning, it can also occur at noon or at night.

About half of women who experience morning sickness stop experiencing nausea and vomiting by the beginning of the second trimester. For most other women, it may take about a month before the symptoms of morning sickness are alleviated.

What are the reasons for missing menstruation?

1. Tuberculous endometritis causes amenorrhea

This is because tuberculosis invades the endometrium, causing inflammation of the endometrium and damage to varying degrees, which then leads to scar tissue and amenorrhea. Therefore, if you have tuberculous endometritis, you should get treatment in time without delay.

2. The effect of the drug causes amenorrhea

For example, endocrine disorders after taking birth control pills can also cause delayed menstruation. According to patient feedback, doctors also found that the gastrokinetic drug metoclopramide, also known as domperidone, may also cause it. Because metoclopramide does not easily pass through the blood-brain barrier, it is believed that it has no inhibitory effect on central dopamine receptors. The inhibition of central dopamine receptors causes a decrease in the amount of factors released by the hypothalamus into the anterior pituitary gland, so the secretion of gonadotropin and corticotropin by the anterior pituitary gland is reduced, leading to amenorrhea and delayed ovulation.

3. Amenorrhea due to surgery

For example, intrauterine surgery may cause cervical adhesions, which may lead to menstrual blood stasis and thus prevent menstruation. In addition, after an abortion, the changes in the body's hormones may also cause ovulation to be delayed, and menstruation may be postponed accordingly. Therefore, there may be a phenomenon of not having menstruation for one or several months after the abortion.

4. Ovarian reasons lead to amenorrhea

It is also called ovarian amenorrhea. Normal menstruation occurs, and the reason why women do not have their periods is that the hormones secreted by the ovaries act on the endometrium, causing it to change, and then fall off and bleed. If the ovaries cannot secrete hormones, the endometrium will not change and menstruation will stop naturally, such as congenital ovarian dysplasia, premature ovarian failure, etc. Amenorrhea caused by this reason is often accompanied by the degeneration of female characteristics, such as equal breasts.