Boys and girls would have known earlier
Release time : 09/11/2025 09:30:04
Fetal gender determination generally involves drawing 12ml of maternal blood before birth to analyze the fetus's chromosomes, detecting the fetal sex.
China prohibits gender identification.
There are many folk methods to determine the fetal sex, including examining the pregnancy lines.
How can the presence of stretch marks be used to determine whether a baby is a boy or a girl? By looking at the thickness of the stretch marks: if they are narrow, it's likely the baby will be a boy; if they are wide, it's likely the baby will be a girl.
When looking at the location of stretch marks around the navel, if there is a noticeable preference for the left side, the chances of having a boy are higher; if there is a noticeable preference for the right side, the chances of having a girl are higher.
Look at the width of stretch marks: Pregnant women with thin stretch marks tend to have more boys, while those with thick stretch marks tend to have more girls.
Pre-knowing the sex of a baby has been a topic of discussion. Some say that you can predict the gender of your child by calculating the estimated date of delivery.
The specific method is as follows: Calculate the sum of a pregnant woman's age (age in years) and the month of the expected date of delivery (lunar calendar month). If the sum ends in an odd number, it indicates a boy; if it ends in a even number, it indicates a girl.
Step 1: Calculate the estimated due date. According to medical standards, based on the first day of the last menstrual period, the entire pregnancy period is calculated at 280 days, and there are 10 gestational months (each month is 28 days).
The month of the last menstrual period is added 9 or subtracted 3 to determine the estimated date of delivery. The day is added 7 to determine the estimated date of delivery.
The last menstrual period was March 4, 2012. The estimated due date is November 11, 2012.
Step two: Calculate the sex of the child. If the pregnant woman was born in 1990, her age (in years) is 24, and the month of the estimated date of birth (lunar calendar) is 11. Adding 24 to 11 equals 35, which ends with a single digit, indicating that she will have a boy.
Additionally, there is the belief that boys are more likely to be "preterm," meaning they tend to be born before their due dates, while girls are more likely to be born after their due dates.
Another method of differentiation can be achieved using a four-dimensional color ultrasound diagnostic instrument, which is currently the most advanced color ultrasound device in the world. Many pregnant women have become accustomed to asking their doctors whether the fetus is male or female after undergoing a four-dimensional ultrasound scan.
Although four-dimensional ultrasound can reveal the gender of the fetus, during the examination process, to avoid revealing the gender characteristics of the fetus and its lower body, doctors will actively avoid the gender characteristics of the fetus. At the same time, in the production of CDs later on, parts that may reveal the gender of the fetus will be processed.
Predicting the Gender of a Baby Early in Pregnancy: Characteristics During Pregnancy, The pregnant body will experience varying degrees of pregnancy reactions and symptoms during pregnancy.
There is a belief that the features of pregnancy differ depending on whether it results in a boy or a girl. In this case, pregnant women can refer to the following: Different characteristics for boys and girls born during pregnancy: 1. In the first three months of pregnancy (pre-gestational period), absence of morning sickness indicates a boy birth.
Pregnant women who suffer severe morning sickness in the early stages of pregnancy are likely to have a girl.
2. If the fetal heart rate is less than 140 beats/minute, it's a boy; if it's at least 140 beats/minute, it's a girl.
3. The color of the nipples tends to become darker, indicating a boy; if it's lighter, it indicates a girl.
4. A gradually swollen belly, resembling a well-inflated and hard, round basketball, suggests a boy; a gradually swollen belly that resembles a large watermelon, with its shape not as round as a ball, indicates a girl.
In fact, the above statements lack sufficient scientific evidence.
Firstly, morning sickness is caused by the rapid rise in human chorionic gonadotropin (HCG) levels during early pregnancy, which suppresses gastric acid secretion and reduces gastrointestinal motility, thereby affecting the appetite and digestive function of the expectant mother.
Pregnancy nausea is possible in either male or female.
Many pregnant women's personal experiences also demonstrate that the intensity of morning sickness does not correlate with the gender of the fetus.
The fetal heart rate can be used to determine the sex of the baby, with a higher degree of accuracy compared to other characteristics. This is based on the scientific evidence that male fetuses have a slower heart rate than female fetuses. Therefore, when a woman becomes angry, it's often difficult for her to control her emotions! Typically, a fetal heart rate of 140 beats per minute or more is associated with males, while a fetal heart rate of 150 beats per minute or more is predominantly associated with females, especially after seven and a half months of pregnancy. Of course, this does not mean that a single fetal heart rate measurement can definitively determine the gender; it must be consistently checked over multiple visits with consistent results in the same range to make an accurate determination.
Why can't we just judge the sex of a baby based on one or two fetal heart rate readings? Sometimes, when a female fetus is in a deep sleep during a fetal heart rate check, its heart rate may be slightly lower than usual. Conversely, sometimes male fetuses are moving around during the doctor's exam, which could lead to a higher heart rate than normal—even surpassing 145 beats per minute. Therefore, it is necessary for the mother to undergo multiple prenatal screenings to roughly determine the baby's gender.
Can the sex of a baby be determined from B-ultrasound data? B-ultrasound is one of the mandatory examinations for pregnant women during their pregnancy. We can check whether the fetus is developing normally, and some even say they can determine the sex of the baby from the B-ultrasound report.
Let's take a look at this.
1. Some people believe that by looking at the data on a pregnancy ultrasound, pregnant women can determine whether they will have a boy or girl.
The first point: If it's shaped like a radish or a long strip, it's likely to be a boy. If it's round, it's likely to be a girl.
Secondly: According to the data, if the difference between the length and width is more than one times, the probability of having a boy is higher.
The probability of having a girl is greater if the length and width are equal.
BC data of 7W+1D, the gestational sac is 2.9*1.9 and it is a boy.
BC data with a twin pregnancy of 9W+4D showed a gestational sac size of 46, 6*30, 2mm and both fetuses were girls; the 60-day BC data showed a gestational sac size of 3, 6*1, 6mm and the child was a boy.
5W+6D, a 25mm*11mm gestational sac with a male fetus.
The ovum is 23 x 17 x 16 and the child was a girl.
46 days B-C data, gestational sac: 20*17*17. Pregnant girl.
The result of the BC examination with a 7w+1D is 32*20mm gestational sac, and the fetus is female.
8 weeks old, they were born on January 6th. On January 7th, a baby girl was born.
At 8 weeks, it measured 41*28 mm, and the child born was a girl. At 8 weeks and more than one month, the BC showed a gestational sac measuring 19 mm * 10 mm, and later, the BC revealed that the child was a boy.
The gestational sac measures 35mm x 34mm x 28mm, which suggests a cute little girl.
The size of the gestational sac is 18*16*8, and it's a girl.
62 days: a gestation sac is observed, measuring 2.6*1.8 cm. The baby was born as adorable; he/she is a boy.
With a 50-day pregnancy, a cute boy is expected to be born.
B-ultrasound data from 7 weeks and more, the intrauterine cavity is seen as 3.8*2.3cm gestational sac, born boy.
The gestational sac measures 44*20mm, and the child was born a boy.
9 weeks and 6 days, BC result 5,6*2,423 weeks + 5 days, it shows that the baby is a boy.
The gestational sac measures 33*18 mm, and the current B-ultrasound indicates a boy.
The gestational sac measures 35 mm in length and 27 mm in width, and the child is female.
But some experts also say that there is no scientific basis for judging men and women from ultrasound alone. The shape and size of the gestational sac are determined by various factors such as pregnancy time, nutrition, implantation position, and uterine cavity size
The medical content discussed in this text is for reference only.
In case of discomfort, it is advised to seek medical attention immediately for a precise diagnosis and treatment.