What are the characteristics of a girl's breasts during pregnancy? What are the signs of a girl during the first three months of pregnancy?

With the development of the times, more and more families want to have a girl, thinking that a girl is a warm and caring little cotton-padded jacket. In fact, having a girl also has certain characteristics, which will be reflected in the mother's body.

Keeping an eye on your breast size during pregnancy is very effective in determining the sex of your baby. When the left breast looks a little bigger than the right, it means a girl. This is one of the symptoms of a baby girl during pregnancy.

1. People often say "sour food means a boy, spicy food means a girl". The gender of the baby in the belly can be judged based on the changes in the expectant mother's eating habits after pregnancy. It is generally believed that if a pregnant woman likes to eat spicy food during pregnancy, the baby she gives birth to will be a girl.

2. Many women who have had children say that the early pregnancy reaction of a girl is stronger, and some serious symptoms include headaches, long-term poor appetite, nausea, etc. However, the early pregnancy reaction of a boy is not strong, and most of them are mild vomiting.

3. After pregnancy, if the color of the pregnant woman's nipples gradually darkens and approaches black, it may be related to a large increase in estrogen in the body, and it is suspected to be a sign of having a girl.

4. If the baby is a girl, the mother's complexion will become better and her skin will become smoother. This statement may find some clues from the secretion of hormones in the body. If the baby is a girl, the girl's endocrine system is the same as the mother's, and the estrogen in the mother's body will increase relatively, so the skin will naturally get better.

The accuracy of blood test for checking gender is very high, up to 99%. The blood test for checking gender is to draw blood and detect the chromosomes of the fetus through the blood to determine the gender of the fetus. This is very accurate and will not cause any harm to pregnant women and fetuses. It is very safe. However, my country prohibits non-medical identification of fetal gender. This is illegal and is not recommended.

Chromosomes can determine the sex of biological individuals. There are two types of chromosomes, X and Y. Under normal circumstances, each cell in the human body has 23 pairs of chromosomes, including 22 pairs of autosomes and 1 pair of sex chromosomes. The sex chromosomes of males are XY, and those of females are XX. The successful separation of fetal cells from maternal blood indicates that the source of fetal DNA can be obtained through a simple venous blood sampling route. After the blood sample of the pregnant woman is drawn, it is first subjected to two high-speed centrifugation treatments, and the upper clear liquid is transferred into a new sterile tube and frozen for later use. Then the DNA in the supernatant is extracted with reagents, stained, and placed under the instrument for observation. If the SRY band is seen, it means it is a boy, and if it is not, it means it is a girl. In addition, as the fetus continues to grow, the DNA concentration will increase and reach a peak 6 weeks after conception. What is the connection between these DNA fragments and the sex of the fetus? A gene called "SRY" only exists on the Y chromosome. Once its presence is detected, it means that the fetus is male, and if it is not detected, it is a girl.