Ultrasound Gender Determination: What to Expect at 15 Weeks - Obstetrics and Gynecology

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Ultrasound Gender Determination


Hello Doctor! During the prenatal check-up two days ago at 15 weeks, the baby was in a kneeling position, making it difficult to determine the gender.
However, since my family keeps asking and I would like to purchase baby supplies, there is still a month until the next check-up.
I later found a high-resolution image from the first trimester screening that shows a side view, but I am unable to confirm the gender.
Could you please help me review it? Thank you!

Ms. Hsu, 30~39 year old female. Ask Date: 2017/03/05

Dr. Huang Jianzhong reply Obstetrics and Gynecology


Two days ago, during the 15-week prenatal check-up, the baby was in a kneeling position, making it difficult to determine the gender.
However, since family members have been asking and I also want to purchase baby supplies, and there is still a month until the next check-up, I later realized that during the first trimester screening, there was a high-resolution ultrasound showing a transparent umbilical cord.
There is a side view image, but it does not confirm the gender.
Could you please help me review it, doctor? Thank you!
Response: The baby was in a kneeling position, making it impossible to determine the gender.
I suggest switching to another hospital next week for another ultrasound.

Reply Date: 2017/03/05

More Info


At 15 weeks of pregnancy, determining the gender of the fetus through ultrasound can be challenging, especially if the baby is in a position that does not allow for a clear view of the genitalia. Typically, the best time to accurately determine the sex of the fetus via ultrasound is around 18 to 20 weeks, when the genital structures are more developed and easier to visualize. However, some practitioners may attempt to make a guess as early as 13 to 14 weeks, but this is often less reliable.

In your case, since the baby was in a kneeling position during the ultrasound, it is understandable that the technician was unable to provide a definitive answer regarding the gender. The position of the fetus can significantly affect the visibility of the genitalia, and if the legs are crossed or the baby is facing away, it may not be possible to see what is needed for a clear determination.

Regarding your desire to purchase baby items, it is advisable to wait until you have a more definitive answer about the baby's gender. While it can be tempting to buy clothes and accessories based on a guess, there is always a chance that the initial assessment could be incorrect. Many parents choose to wait until the anatomy scan, typically performed between 18 and 20 weeks, to confirm the gender before making any purchases.

As for the high-level ultrasound you mentioned, it is designed to assess the anatomy of the fetus and can sometimes provide insights into gender, but again, this depends on the position of the fetus and the skill of the technician. If you have images from that scan, it may be worth discussing them with your healthcare provider, who can offer a more informed opinion based on their expertise.

In addition to gender determination, it is important to remember that ultrasounds serve multiple purposes during pregnancy. They are crucial for monitoring fetal growth, checking for any abnormalities, and ensuring the overall health of both the mother and the baby. If you have concerns about the frequency of ultrasounds or the necessity of additional scans, it is always best to discuss these with your healthcare provider. They can explain the benefits and risks associated with ultrasound imaging and help you make informed decisions about your prenatal care.

Lastly, regarding your question about feeling nauseous and hungry during pregnancy, these symptoms are quite common. Many women experience nausea, often referred to as "morning sickness," during the first trimester, which can sometimes extend into the second trimester. This is typically due to hormonal changes in the body. Feeling hungry frequently can also be a normal part of pregnancy, as your body requires additional calories and nutrients to support the growing fetus. Eating small, frequent meals can help manage both nausea and hunger.

In summary, while it may be frustrating to wait for a definitive answer regarding your baby's gender, patience is key. The anatomy scan will provide a clearer picture, and in the meantime, focus on maintaining a healthy diet and discussing any concerns with your healthcare provider.

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