How Is Girl’s Swollen Part Mistaken for Boy During 12-22 Weeks?

How is girl swollen part mistaken for boy? Well, that mistakes comes from the missmatching the ultrasound report.

Some people mistake it for a boy due to the swollen parts looks like a male part

When a woman is pregnant, she has to undergo ultrasounds several times. It is necessary to check her internal parts and the baby’s growth. However, the ultrasounds are mostly necessary during the first two trimesters.

When the child grows, it becomes a matter of excitement if the baby is a boy or a girl. You may have seen many people celebrating the gender reveal party at home.

How Is Girl Swollen Part Mistaken For Boy?

The key reason is the cervix area of a girl gets swollen, and it looks like a male private part that making everyone sure that it is a boy. 

In general, sonograms are the most accurate when they’re done between 18 and 22 weeks of pregnancy, says Patricia A. Evans

After 13 weeks, it is accurate in 99% to 100% of cases without malformed external genitalia

Odeh M, Granin V, Kais M, Ophir E, Bornstein J. Sonographic Fetal Sex DeterminationObstet Gynecol Surv. 2009;64(1):50-57. doi:10.1097/OGX.0b013e318193299b
Swollen girl mistaken for a boy
Photos of swollen girl mistaken

After 15-18 weeks, the lower portion of the baby is formed, and that’s when you can find out the gender. In many cases, when the doctors have noticed 3 lines in the lower portion, they assume it to be a boy. 

How Is Girl Swollen Part Mistaken For Boy During At 12 Weeks

We have seen many times that people who went for an ultrasound at 16 weeks have faced this issue. Though it’s too early to know the result, the swollen girl part is often misunderstood as a penis. The umbilical cord forms between the legs and once the ultrasound gets some pictures it may look like a boy’s genitals in the first stance.

Often the swollen umbilical cord is mistaken as a boy part during the ultrasound. In some pictures, it might look like a boy, but there is a chance that it could be swollen girl parts. But 12 weeks is too early to know the gender of your baby.

After 13 weeks, it is accurate in 99% to 100% of cases without malformed external genitalia.

DOI: 10.1097/OGX.0b013e318193299b

Sometimes, the baby’s movements can confuse the person checking the ultrasound screen because the part that determines the gender doesn’t seem on the screen. 

Moreover, you have to be careful about whether the person analyzing the ultrasound report or doing it is an expert. You should check if the person present there can have the perfect reading from the screen or not. 

Besides, a basic ultrasound rule is you have to drink water and create pressure on your bladder. The more pressure you will have, the more accurate results. 

Umbilical Cord Swollen Girl Parts Mistaken For Boys

Every fetus develops a protuberance in between the legs which later turns into either a va*gina in the case of a female child or a penis and scrotum for a male.

In the case of a male fetus, a small protrusion in between the legs will occur. Don’t confuse it with the umbilical cord that also has the same location. A cord can later be differentiated from the penis as the cord is bigger in size than the penis.

However, a girl fetus develops a parallel line between the legs which later forms into the cli*toris and labia.

A girl’s part would appear like three liners in between the legs, on the other hand, the boy’s part will have a penis. But sometimes the umbilical cord which is attached to the genitals might get swollen and it may look like a penis to you.

It usually happens with the female fetus. We often confuse the swollen umbilical cord with the penis. It happens usually during the 15-17 weeks pregnancy period. Even with an unpredictable angle, the labia can be mistaken as a boy part if it is swollen. So, better to get an expert to take a look at the ultrasound results.

How Do Body Parts of a Baby Get Swollen?

The journey begins when a zygote forms inside the tube and the cell slowly connects to the ovary. Many parts slowly grow inside the mother’s body during the pregnancy to have connectivity and provide safety. 

However, you will find the baby inside something shaped like a ball after an ultrasound.

The ball is not filled with air, but it is fluid. That is called amniotic fluid, where the fetus floats and grows. 

However, it supplies the necessary oxygen to the fetus when it grows inside, developing the respiratory system. 

The placenta and cord develop so that the blood and nutrients that the mother intakes can circulate in the baby’s body. 

Now you may think, why does a baby’s body part swell inside the mother’s womb? The reason is simple and natural; it automatically gets swollen when a body part remains in water or fluid. 

Another reason for this is the baby fat; when a baby grows quite fast and the skin forms, a layer of baby fat forms. The layer makes a body part look fat and sometimes changes the actual shape. 

That’s why it is necessary to focus and observe the body parts, especially the va*ginal area, to know the gender. 

When Do People Stop Doing Internal Ultrasound? 

Many people do not know the differences between different ultrasounds. For example, a pregnant woman should get two types of ultrasounds done. 

Knowing the result of transva*ginal ultrasound becomes necessary when a woman is facing many complications.

Abdominal ultrasound is another part that becomes compulsory for pregnant women after the second trimester. If you ask when you should stop doing internal ultrasounds, the answer will vary. 

Most doctors refer to the perfect timing for an ultrasound between 0-22 weeks of pregnancy. 

It can extend up to 2 weeks if necessary, but you can do the abdominal ultrasound once. If the baby’s position, growth, movement, and heartbeat are okay, the mom doesn’t need one. 

On the contrary, it is necessary to do it once a month if the mother faces any problems. 

Sometimes, doctors check the baby for the last time through a sonogram before preparing the labor room. 

So, women may skip ultrasound after the second trimester, but a similar technology won’t leave them until childbirth. 

Why Is Ultrasound So Necessary During the Pregnancy? 

Pregnancy is a crucial yet special moment of every woman’s life. They have to take extra care of themselves to avoid life risks and give birth to children smoothly. 

Ultrasound is the first necessary thing that a woman must pick to check on their and upcoming babies’ health. Let’s see what gynecologists suggest ultrasound for:

1. Find the real pregnancy test result

First, one will have symptoms of pregnancy and test positive for it. She then should consult a doctor who will suggest an ultrasound during the 5 weeks to 6 weeks.

The ultrasound is essential to check the condition of the mother’s ovary, uterus, and other reproductive organs. 

If the lady is having any complications in her body during pregnancy, she can easily find out that through the ultrasound reports. The doctor can also prescribe medicines or refer to what to do next.

2. Fetal pole examine

The next ultrasound, after some time, is necessary to examine fetal pole at 7 weeks or 6 weeks, if the fetus is growing well or not.

If the baby’s position is okay or not can be found in ultrasound pictures. 

There is a step-by-step growth for the fetus, which doctors observe during the first and second trimesters. 

3. Baby development check up

After some time, during the 20-22, the baby’s heart, head, hands, and legs are formed gradually. If you see any forming disorder, the doctor will tell you to take the necessary actions.

4. Birth date prognosis or due date examine

After a person has confirmed her pregnancy, it is necessary to estimate the due date so that you may know the delivery time. 

The gynecologist may prepone or postpone the date according to the growth and health. 

5. Baby Gender identification

The gender of a baby can be determined during the time of conception. So when you are planning for the first baby, then there are many old and ancient ways to predict sex for example, pencil test for gender prediction. but the ultrasound is the most reliable one. As we know, the genitals form in a baby at the age of the third trimester of pregnancy.

But sometimes, the shape becomes a big confusion. That will require further ultrasounds because it will be better to clear the confusion. 

These reasons are enough to go to doctors and check some routine ultrasound reports for the mother and baby’s proper health.

Now it has been pretty easy to get clear footage of the baby through a sonography picture. 

Therefore, if you want to check on the baby’s gender and observe the swollen parts, you should get multiple appointments.


Now that you know the reasons and steps to solve when swollen girl parts mistaken for boy, you can do what is necessary. Sometimes people prefer to keep it a surprise and don’t check the baby’s gender. 

Moreover, some developing countries have banned checking the gender of an upcoming baby.

Many people don’t prefer to have a girl child and abort it when they find out it’s a girl. Thus, it becomes optional for some people, but waiting eagerly should read everything written. 

That’s how you can get an accurate ultrasound result of the baby’s gender.

Sarah, a health writer and editor since 2014, is an adoring wife and dedicated mother to 2 daughters and 1 son. As the creator of Babies Plannet, she combines her extensive expertise with her maternal dedication to provide essential care and safety advice for infants, nurturing their well-being and happiness. Her writing explores topics like fitness, pregnancy, and women's healthy lifestyles.

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