Nub theory is a fun way to make a slightly-better-than-random guess at your baby’s sex after your 12-week ultrasound. (Hey, it’s probably more accurate than peeing in a cup of salt water to ...

The nub theory might seem like a fool-proof way to tell the sex of your little one, but midwives and other doctors recommend you wait until your second ultrasound, typically at 20 weeks, to be ...

The Nub Theory ‌All babies have a genital tubercle, informally called a ‘nub’ seen between the legs. The nub usually develops around 11 to 13 weeks.

However, there isn't much evidence that nub theory is reliable or accurate. Boy Ultrasound Signs You would think that male fetuses would be easier to identify than females, but that's not always ...

The nub theory is basically about 'the angle of the dangle'. Between 11 and 14 weeks' gestation both genders have a penis-like protuberance between the legs.

Parents-to-be are asking strangers to guess their baby’s sex by posting scan pictures online, in a wacky new craze sweeping the internet.

The nub theory might seem like a fool-proof way to tell the sex of your little one, but midwives and other doctors recommend you wait until your second ultrasound, typically at 20 weeks, to be ...