38 days gestational sac size picture

Pregnant mothers are eager to know the gender of their baby. Now you can carefully observe the gestational sac to distinguish the sex of the fetus. Eight weeks of pregnancy is also the best time to check the gestational sac. So, how to judge the fetal sac? Next, the editor will explain these aspects in detail for everyone.

How to judge the fetal sac

1. Calculation of gender test formula

Can the gestational sac accurately determine the gender? The fetus in the belly is always full of novelty, and predicting whether the baby will be a boy or a girl has always been the most popular issue. It is said that B-ultrasound data can determine the gender of the baby, and the gestational sac is also an important data in the B-ultrasound.

First of all, the data cannot exceed 8 weeks, 40 days is the best, and then there must be 3 data. Without 3 data, it cannot be distinguished at all. The gestational sac is cylindrical. Every B-ultrasound technician will take the cross-section in a different direction when doing B-ultrasound. Some take cross-sections, some take vertical cross-sections. Therefore, it is impossible to distinguish the gender by looking at whether the image is long or round.

For example, the gestational sac is 40*2b250m. There is no way to distinguish it at all. On the surface, the two numbers are half the distance, so it should be a boy. But no, because there is no third number. If it is 40*40*20, it is definitely a boy. But if the ultrasound technician does a cross-section, the gestational sac becomes two numbers of 40*4b250m, which looks round. Then it is concluded that the gestational sac is round, but how can a child be born? It seems like an illegal fraud. Therefore, there must be 3 pieces of data. If the gestational sac is an arithmetic progression, such as 40*30*20, then it is a girl. However, if the ultrasound technician takes a 40*20 cross-section, it looks like a boy's data, but a girl grows out, leading to the saying that the gestational sac cannot be used to determine the gender of the baby.

2. Look at the list.

The fetal sac chart is the initial embryonic structure, that is, the size chart of the small test tube embryo, which allows us to see whether the fetus can grow and develop normally. Pregnancy is a complicated process. After the egg is fertilized, it enters the uterine cavity, and the embryo and attachments develop rapidly to perfection. There are different changes in each week of pregnancy.

4 weeks: The fetus is only 0.2 cm. The amniotic cavity is formed just after the sperm and egg combine and the embryo implants, and its volume is not large. Ultrasound cannot clearly show signs of pregnancy.

5 weeks: The fetus grows to 0.4 cm and enters the test tube embryo stage. The amniotic cavity expands, initial cardiovascular and cerebrovascular diseases appear, and heart beats may be present. B-ultrasound can show a small gestational sac, which occupies less than 1/4 of the uterine cavity, or the embryonic bud and fetal heartbeat can be seen from it.

6 weeks: The baby grows to 0.85 cm, the head, brain alveoli, frontal organs, respiratory, digestive, and nervous organs of the baby are divided, the gestational sac is clearly visible on B-ultrasound, and the fetal bud, fetal heart rate and fetal heart rate are seen.

7 weeks: The fetus grows to 1.33 cm. The test tube embryo has a human prototype. The body segments have all been divided, the limbs have separated, and the various systems are further developing. B-ultrasound clearly shows the embryo, fetal heart rate and fetal heart rate. The gestational sac occupies about 1/3 of the uterine cavity.

8 weeks: The fetus grows to 1.66 cm, the fetal shape is fixed, the fetal head, body and limbs can be separated, and the fetal head is larger than the body. B-ultrasound shows that the gestational sac occupies about 1/2 of the vagina, the shape of the fetus and the fetal movement are clearly visible, and the yolk sac can be seen.