Is the blood test accurate for boys and girls?
Is the blood test accurate for boys and girls? B-ultrasound and blood test are accurate, but they are generally not done. Hundreds of years ago, there were many popular methods to predict the sex of children. Although these methods are more interesting than reliable at present, it is also a good choice to enjoy guessing.
There are three ways to judge boys and girls. Boys and girls have long known the judgment method 1: sharp men and round women. By observing the shape of pregnant women's stomachs, we know that pregnant women who give birth to boys and girls have sharp and convex stomachs and are pregnant with boys and babies; Round belly, pregnant with a baby girl.
Reveal the truth: the position of the fetus is active, and the shape of the pregnant woman's stomach is not necessarily related to the sex of the fetus. The shape of the pregnant woman's belly is largely determined by the size of the fetus and the posture of the fetus in the uterus.
1, the average weight of male fetus will exceed that of female fetus, but this difference is not enough to make a significant difference between pregnant women's bulging stomachs.
2, the posture of the fetus will also determine the shape of the pregnant woman's stomach. If the fetus is facing the mother in the womb, then the pregnant woman's stomach will be more prominent; On the contrary, if the fetus faces the mother in the womb, it will make the abdomen flatter.
Boys and girls have long known the second judgment method: ugly men. Observing the changes of pregnant women's appearance and skin shows that if pregnant women have ugly appearance, rough skin and even acne on their faces, they may be pregnant with boys and girls. The pregnant woman's appearance has become beautiful and her skin has become smooth, and she may be pregnant with a baby girl.
Reveal the truth: There is little difference in hormones produced by pregnant boys and girls, which can not obviously change the appearance of pregnant women. The skin condition of pregnant women is also related to many factors such as living habits and environment.
1, people who believe this statement believe that this is due to the different hormone levels stimulated by different sex fetuses after pregnancy, which leads to the changes of pregnant women's faces.
2. In fact, compared with before pregnancy, regardless of the sex of the fetus, the hormone level in the mother will change significantly, and the secretion of estrogen, progesterone and testosterone will increase significantly. No matter whether the baby is pregnant with a boy or a girl, the secretion of these hormones is not much different.
Boys and girls have long known the third judgment method: fast women and slow men. Observing the speed of fetal heart rate shows that the stronger and slower the fetal heart rate, the greater the possibility that the fetus is a boy. On the contrary, it is pregnant with a girl (a common way to guess the symptoms of pregnant boys and girls).
Reveal the truth: whether the fetus is a boy or a girl, the fetal heart rate is different at each time period, and the fetal heart rate has nothing to do with giving birth to a boy or a girl.
1, in fact, the heart rate of girls is higher than that of boys, which is only at birth. When they are both fetuses, there is no difference in the heart rate between male and female fetuses.
2. During pregnancy, the fetal heart rate will change with the change of gestational age. Generally speaking, in the fifth week of pregnancy, the fetal heart rate is close to the mother's heart rate, 80-85 beats/min. By the ninth week of pregnancy, the fetal heart rate gradually accelerated to 170-200 beats/min. In the second trimester, it gradually slowed down to 120- 160 beats/min.
Wonderful recommendation:
Can amniocentesis for ectopic pregnancy with four-dimensional color Doppler Down's screening for varicose veins and false contractions lead to dyspnea? Does the baby move during contractions? Is the sex of the fetus 100% accurate by B-ultrasound?