You can say something like, “Can you show me exactly what indicates the sex? Can you explain to me how you can tell? I really appreciate it!”

Sometimes the nub won’t be visible, and the technician won’t be able to see it. That doesn’t mean that anything is wrong. You’ll just need to wait until your next ultrasound and hope that it will be visible then. You probably won’t be able to identify the nub with an untrained eye. Ask the technician to point directly to the nub, and show you the angle.

You might be able to identify a penis on your own, but it’s still a good idea to ask the technician if you’re looking at the right thing. Keep in mind that sometimes another body part, like a finger, might be mistaken for a penis. The position of the fetus can sometimes make it difficult to tell for sure what is what.

Ask the technician to point out the vulva, clitoris, and labia, if they think the sex is female. Try to identify the scrotum and testicle of a male, with the help of the technician. 3D and 4D ultrasounds provide a much clearer picture of the baby at 18-20 weeks. However, they are completely optional, as they do not actually make it easier to determine the sex. Although ultrasounds are safe, you should only have them when necessary. Many people get 3D or 4D ultrasounds as a “keep sake”, but many doctors advise that it’s better to wait to snap photos after the birth. Also, insurance might not cover the expense. [4] X Research source

Ultrasounds early in the pregnancy are generally to monitor the health of the baby and check for any issues. They’re not intended to be able to reveal the sex.

The position of the fetus or just a simple error on the part of the technician can result in predicting the wrong sex.