Ma Bao talks about the shape of a boy's stomach.

1. When I look at the navel before pregnancy, many expectant mothers will discuss the shape of the navel and the line below to judge the sex of the fetus. Many people think that the navel is concave for boys and convex for girls. The boy with a long navel line is a girl with a short navel line.

But this method is only heard from people. After all, there is no scientific research to prove it, so it cannot be used to judge the sex of the fetus.

2. Look at the fetal heart rate. This is a sentence that many mothers will hear, so they will pay special attention to the fetal heart rate after doing color ultrasound. Some people think that the boy's fetal heart rate is lower than 140 beats/min and the girl's fetal heart rate is higher than 140 beats/min, which is actually unscientific.

Because under normal circumstances, the heart rate of men is lower than that of women, but there is no difference in fetal heart rate when they are still fetuses, so this is also an uncertified rumor.

3. Look at the morning sickness reaction. Morning sickness is a symptom that most pregnant women will have. Especially in the first trimester, due to the rapid increase of human chorionic gonadotropin level, the secretion of gastric acid in human body is reduced, and gastrointestinal peristalsis is is reduced, which makes many pregnant women lose appetite, smell a lot, and are prone to nausea and vomiting.

Many elderly people will judge the sex of the fetus according to the severity of morning sickness. For example, boys usually have a slight morning sickness reaction, while girls have a serious morning sickness reaction. Although this statement is common, it has not been confirmed.

In fact, everyone's physique is different, and the performance during pregnancy is naturally different. It is not rigorous to judge the sex of the fetus only by the severity of morning sickness.

4. Look at the shape of your belly. This situation will happen to many pregnant women. Sometimes when you meet an acquaintance on the road, he will fill your stomach a lot before judging whether it is a boy or a girl.

People usually think of it as a boy with a round and tight stomach; And the girl with a lower abdomen and an oval belly, in fact, this statement also ignores the body shape, fat and pelvic problems of pregnant women themselves, so it is unscientific.

You know, everyone's body shape is different, the shape of the pelvis is different, and the shape of the belly will naturally be different, so this statement is also unreliable.

5. Look at the color of areola. In the second and third trimester, the areola color of pregnant women will be white, which is mainly due to the increase of hormone level of pregnant women's melanocytes stimulated by progesterone. To this end, people have also produced a saying that the color of boys' areola is dark, while the color of girls' areola has not changed much. This statement is actually unscientific.

Because each pregnant woman's physique is different, the level of progesterone secreted is also different, which naturally has a deep and shallow influence on the color of areola, so it is impossible to judge the sex of the fetus only by the color of areola.