How to judge the sex of fetus by gestational sac

For pregnant expectant mothers, the whole pregnancy is very cautious, because there are so many things to pay attention to. However, occasionally when they are free, they will take a look at the baby list. So, how to judge the sex of the fetus through the gestational sac? How many days can I see the gestational sac?

How to judge the sex of the fetus through the gestational sac Some people think that the physiological differences between male and female babies can be seen through a single data of color Doppler ultrasound. In fact, the reason why four-dimensional color Doppler ultrasound can see the sex of the fetus is because the reproductive organs of the fetus are directly observed with instruments. According to the single data of color Doppler ultrasound, we can only judge whether the fetus is abnormal or not, but not the sex of the fetus. Boys and girls can be distinguished by the following methods:

1, the size of gestational sac depends on boys and girls: It is said that if the length and width of gestational sac are more than doubled, then a boy is more likely. If the length and width are equal, or the difference is not big, it is likely to be a female baby.

2, the shape of the gestational sac to see the sex of the fetus: Some people think that the shape of the gestational sac can tell whether the fetus is male or female. Generally speaking, if the gestational sac is shaped like eggplant, or it is very long, it is more likely to be pregnant with a male baby; And if the gestational sac is oval or round, it is likely to be a female baby.

There are two common legends about B-ultrasound and the sex of the fetus: 1.b-ultrasound can observe the genitals of the fetus, and the boy who sees the penis is the girl who can't see the penis. 2. According to the data on the B-ultrasound list, gestational sac is a long boy and gestational sac is a round girl. So, are these rumors really credible? For this question, experts say this:

It is feasible to observe the sex of fetus by B-ultrasound. But it is not 100% accurate. If you have the opportunity to walk into the B-ultrasound room of any hospital, you will see a slogan similar to this in a prominent position on the wall: it is forbidden to identify the sex of the fetus that is not needed for medical diagnosis. It can be seen that it is true that B-ultrasound can observe the sex of fetus. However, it should be noted that the prediction of fetal sex by B-ultrasound is not 100% accurate.

How many days can I see the gestational sac? Gestational sac only appears in the early pregnancy. Women who have regular menstrual cramps for 28-30 days will stop menstruating in 35 days, and B-ultrasound can see the gestational sac in the uterine cavity. The gestational sac is about 2 cm in diameter at the sixth week of pregnancy and 5 cm in diameter at the 10 week of pregnancy. The position of gestational sac is normal in the bottom, front wall, back wall, upper part and middle part of uterus. Normal shape is round, oval and clear; If the gestational sac is irregular, fuzzy and located in the lower part, the pregnant woman may miscarry at the same time as abdominal pain or vaginal bleeding.

Generally speaking, after a woman is pregnant, the position of the gestational sac will not change. After implantation and fixation, the early gestational sac is like the root of a big tree. Will not change. Then the gestational sac gradually becomes larger and divides until delivery. Pregnancy is a complicated process. After fertilization, the egg enters the uterine cavity, and the embryo and its appendages grow rapidly until they mature, which will change differently every pregnancy week.

4 weeks: the fetus is only 0.2 cm. As soon as the fertilized egg is implanted, the amniotic cavity is formed, and the volume is very small. Ultrasound shows no signs of pregnancy. 5 weeks: The fetus grows to 0.4 cm, enters the embryonic stage, the amniotic cavity expands, the primitive cardiovascular system appears, and there may be pulsation. B-ultrasound showed a small fetal sac, accounting for less than 1/4 of the uterine cavity, or a germ could be seen.

6 weeks: the fetus grows to 0.85 cm, and the fetal head, brain vesicles, frontal organs, respiratory organs, digestive organs, nerves and other organs differentiate. B-ultrasound can clearly see the fetal sac, and can see the embryo and fetal heartbeat. Week 7: The fetus grows to 1.33 cm, and the embryo has the shape of human embryo, with differentiation of each segment, separation of limbs and further development of each system. B-ultrasound can clearly see the embryo and fetal heartbeat, and the fetal sac accounts for about 1/3 of the uterine cavity. 8 weeks: the fetus grows to 1.66 cm, and the fetal shape has been determined, which can be divided into fetal head, fetal body and fetal limb, and the fetal head is larger than the trunk. B-ultrasound showed that the fetal sac occupied about 1/2 of the official cavity, the fetal shape and fetal movement were clearly visible, and the yolk sac was visible.