The genital tubercle or “nub” is fetal tissue which will create into a penis or even a clitoris as being the pregnancy progresses. Nub theory suggests if you can get a great examine this nub on an ultrasound, you might be able to identify the sexual intercourse of the fetus https://genderuncover.com/product/cant-wait-for-the-anatomy-scan-get-a-peek-with-potty-shot-confirmation/