Baby Gender Confirmation

Hello po, at 20-21 weeks nagpa ultrasound ako kasi galing byahe kaya gusto ko sana ma make sure na ok si baby. Then nakita na genitals niya may tatlong guhit so female daw pero for repeat ultrasound daw ng 23 weeks para sure. May mga cases ba na same as me na 21 weeks na pero di padin sure yung gender ni baby? Yung nag ultrasound kasi sakin is hindi doctor so di niya din ma explain lahat after 2 weeks ko pa ma memeet yung OB ko :( any suggestions po?