Wanting to know the baby's sex from a scan is completely normal. For some, it's about curiosity, for others, it's about being able to prepare mentally and practically. At the same time, it's important to know that sex may not always be clearly visible on ultrasound, and the answer can depend on the stage of pregnancy, the baby's position, and the quality of the scan.

Around the nuchal translucency scan, some might be tempted to get a guess about the baby's sex. However, at this stage, it's often uncertain because the external genitalia are still developing, and the image can be difficult to interpret.

If you get a "guess," consider it just that: a guess. Always ask how certain the assessment is and if there are factors making it difficult to see.

Ask for it to be stated in levels, e.g., "cannot be assessed," "uncertain guess," or "quite clear." This makes it easier to process the answer afterward.

During the anomaly scan, there is often a better chance of seeing the baby's sex because the fetus is larger and the external genitalia are typically more developed. But even here, a definitive answer cannot be guaranteed. If the baby has its legs together, turns away, or if the umbilical cord and placement interfere, it may still be impossible to see.

Mention it at the beginning of the scan so that the sonographer knows you would like them to try when it fits into the rest of the examination.

When the sex can be determined, one typically looks for external anatomical signs. You might hear terms like "three lines" or references to a bulge, but it's always a professional who must assess what is actually visible in the image. Ultrasound is a snapshot, and angles can be misleading.

Shadows, fetal movement, and how the ultrasound beams hit can make details less clear. This is one reason why a clear answer sometimes cannot be obtained.

There are several common reasons why the sex cannot be determined:

• The fetal position prevents the area from being seen.
• The scanning angle is not optimal.
• The amount of amniotic fluid and placement can affect the image.
• Early in pregnancy, details are less clear.

If you don't get an answer, it doesn't mean something is wrong. It typically just means that it cannot be seen reliably.

You cannot control the baby's position, but you can make it easy for yourself to lie relaxed and have access to your abdomen. Choose clothes that you can quickly open or lift, and that are not constricting.

A soft, seamless bra without underwire can also make the scan more comfortable, especially if your breasts are tender during pregnancy. A supportive alternative to metal can be a gel solution designed to provide support without blocking milk ducts. If you need something comfortable for pregnancy, you can, for example, look at Maternity & Nursing Bras, GEL-SUPPORT® maternity and nursing bra, and Support Belts.