How to tell the gender on the pregnancy test sheet in the first trimester

Everyone is curious about the gender of the fetus, because before birth, you don’t know whether it is a boy or a girl. Therefore, many methods for predicting the gender of the fetus have been developed, such as looking at the test sheet, belly size, etc. How does the pregnancy test sheet tell the gender in the first trimester? How many days can the gestational sac be seen? How does the pregnancy test sheet tell the gender in the first trimester?

Regarding B-ultrasound and fetal gender, there are the following methods:

1. B-ultrasound can observe the fetal genitals. If you see a "small penis", it is a boy. It's the girl who gets the "small penis".

2. According to the data on the B-ultrasound sheet, the shape of the gestational sac can tell whether the fetus is a boy or a girl. Generally speaking, if the gestational sac is shaped like an eggplant or elongated, it is more likely to be a boy; and if the gestational sac is oval or round, it is likely to be a girl. .

3. If the difference between the length and width of the gestational sac is more than double, then the baby is more likely to be a boy. If the length and width are equal, or if they are not much different, it is likely to be a girl.

So, are these rumors really credible? Regarding this issue, experts have this to say: B-ultrasound can detect the gender of the fetus - it is feasible. 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 like this posted on the wall in a prominent position: Fetal gender identification that is not required for medical diagnosis is prohibited. It can be seen that it is true that B-ultrasound can detect the gender of the fetus. But it should be noted that predicting the gender of the fetus through B-ultrasound is not 100% accurate.

Before 10 weeks of pregnancy - it cannot be measured at all. Although the gender of the fetus is determined by genes when a woman is pregnant. However, at the very beginning of fetal development, men and women are the same. At the very beginning, the left and right embryos have a small bud or raised genitalia. Only around 7 weeks of pregnancy will the small buds or bulges develop to form the penis, scrotum or clitoris, and labia. However, at this time, B-ultrasound still cannot really tell the gender of the fetus. Because the development of the fetus is a step-by-step process that takes time and cannot be achieved in one step. How many days does it take to see the gestational sac?

The gestational sac is only seen in the early stages of pregnancy. For women who menstruate regularly on 28-30 days, if menopause occurs on 35 days, the gestational sac can be seen in the uterine cavity by B-ultrasound. The diameter of the gestational sac is about 2 cm at 6 weeks of pregnancy and about 5 cm at 10 weeks of pregnancy. It is normal for the gestational sac to be located at the fundus, front wall, posterior wall, upper part, and middle part of the uterus; it is normal for the shape to be round, oval, and clear; if the gestational sac is irregular, fuzzy, and located in the lower part, the pregnant woman also If you have abdominal pain or vaginal bleeding, you may need to have an abortion.

Generally speaking, the position of a woman’s gestational sac will not change after pregnancy. After the early pregnancy sac is implanted and fixed, it is like the roots of a big tree. It won't change. Then the gestational sac gradually enlarges and divides until delivery.

Pregnancy is a complex process. After the egg is fertilized, it enters the uterine cavity, and the embryo and appendages rapidly grow and develop until they mature. There will be different changes in each gestational week.

4 weeks: The fetus is only 0.2 cm. Just after the fertilized egg has completed implantation, the amniotic cavity is formed and is very small. Ultrasound shows no signs of pregnancy yet.

5 weeks: The fetus has grown to 0.4 cm and entered the embryonic stage. The amniotic cavity expands, primitive cardiovascular systems appear, and there may be pulsation. A small fetal sac can be seen on B-ultrasound, which occupies less than 1/4 of the uterine cavity, or a fetal bud may be visible.

6 weeks: The fetus has grown to 0.85 cm. The fetal head, brain vesicles, frontal organs, respiratory, digestive, nerve and other organs are differentiated. The fetal sac is clearly visible on B-ultrasound, and the fetal bud and fetal heartbeat are also visible. .

Seven weeks: The fetus has grown to 1.33 cm. The embryo has taken on the rudimentary shape of a human, with all body segments differentiated, limbs separated, and various systems further developed. B-ultrasound clearly shows the fetal bud and fetal heartbeat, and the fetal sac occupies about 1/3 of the uterine cavity.

8 weeks: The fetus has grown to 1.66 cm, the shape of the fetus has been determined, and the fetal head, body and limbs can be separated. The fetal head is larger than the trunk.

B-ultrasound shows that the fetal sac occupies about 1/2 of the official cavity, the fetal shape and movements are clearly visible, and the yolk sac can be seen.