Is it accurate to determine the gender of a baby at 4 months?

With the improvement of people's ideological awareness, more and more families no longer have the idea of ​​favoring boys over girls. Only the older generation still prefers boys. As the pregnancy time increases, women can determine the gender of the fetus through B-ultrasound examination before, but now the country does not allow it, so pregnant women do not need to know the gender of the baby in advance. So is the accuracy rate of B-ultrasound in 4 months high?

First, is the accuracy of determining the gender of the fetus by B-ultrasound at 4 months of pregnancy high? Medically speaking, it is very easy to tell the gender of the fetus when you have an ultrasound examination around 20 weeks (four months) of pregnancy. Of course, the premise is that the doctor doing the B-ultrasound can see the key parts. During this period, the differences between boys and girls are already obvious. As your pregnancy progresses, the difference will become easier to spot. If your baby is surrounded by amniotic fluid and his feet are not tucked between his legs, an ultrasound in the third trimester can usually determine the sex of the fetus. Of course, the premise is that your baby is very cooperative. He must be in a position that allows the ultrasound doctor to see his genitals.

Second, even if the ultrasound doctor can see the fetus's genitals, the image may not be clear. These will affect the accuracy of B-ultrasound in determining the gender of the fetus. The more experienced the ultrasound physician is and the higher the quality of the ultrasound scanning equipment, the more accurate the ultrasound will be in determining the sex of the fetus. However, even the best ultrasound doctors usually cannot be 100% sure whether you are having a boy or a girl. Also, you need to know that in mainland China, fetal sex identification for non-medical reasons is expressly prohibited.

It is not so easy to identify the sex of the fetus through B-ultrasound examination in the early stages of pregnancy. Because the sex of the fetus is determined by genes when you conceive. But in the earliest stages of fetal development, boys and girls look the same. All embryos have a small bud or bump on their genitals. If you are pregnant with a boy, the fetus will begin to secrete testosterone around 7 weeks of pregnancy, stimulating the development of small buds in the genitals to form a penis and scrotum. If you're having a girl, this small bud on your genitals will develop into the clitoris and labia.