Why is miscarriage more common in the first three months of pregnancy? What are the causes?

Among the folks, there is a custom that one cannot talk about pregnancy during the first three months. Why can’t you tell others during the first three months of pregnancy? You know, pregnancy is a happy event. Let us see what the basis for this is.

1. Genetic factors

Embryonic maldevelopment due to abnormalities in the number or structure of chromosomes is the most common cause of miscarriage. Moreover, genetic factors are the main culprit for spontaneous abortion within 12 weeks of pregnancy.

2. Embryonic dysplasia

Abnormal fertilized eggs are the main cause of early miscarriage. About 80% of miscarriages in the first two months of pregnancy are due to some defects in sperm and eggs, which cause the embryo to develop to a certain extent and then terminate. Therefore, the original embryonic tissue cannot be seen in the discharge of this type of miscarriage.

3. Endocrine dysfunction

Only under the action of progesterone can the fertilized egg implant on the uterine wall and grow and develop into a fetus. When the body does not secrete enough progesterone, the uterine decidua will develop poorly, thus affecting the development of the fertilized egg and easily causing miscarriage. If the amount of prostaglandins increases, it will cause frequent contractions of the uterine muscles and may also lead to miscarriage. Reduced thyroid function can cause cell oxidation disorders, thereby affecting the growth and development of the embryo and causing miscarriage.

4. Uterine deformation

A normal uterus is a hollow bag made of muscle, shaped like an upside-down pear. Some physiologically abnormal uteri may have abnormal shapes. If the deformation is not too serious, the baby may be delivered normally, but it will often result in miscarriage.

5. Trauma

The abdomen of a pregnant woman is hit or squeezed by external force, or she falls or participates in heavy physical labor or strenuous sports; abdominal surgery such as appendicitis or ovarian cyst surgery can all cause uterine contraction and miscarriage.

6. Emotions

Pregnancy not only adds a lot of physical burden to pregnant mothers, but also brings psychological pressure to pregnant mothers due to physical changes and increased life responsibilities. Especially in terms of emotions, many pregnant mothers often experience great ups and downs in mood. According to statistics, emotions are most unstable in the early stages of pregnancy. Because during this period, pregnant mothers undergo the greatest changes, including psychological and physiological changes, adjustments in lifestyle habits, and so on. The early pregnancy reactions during this period often cause physical discomfort, and it is not surprising that the pregnant mother's mood can drop from extreme excitement to extreme depression within a few seconds. Unstable emotions can cause disorders in the regulation of the cerebral cortex and subcutaneous centers; at the same time, the sympathetic nerves of the autonomic nervous system promote uterine contractions in pregnant women, and certain emotional stimuli can cause uterine contractions and lead to miscarriage.