Ilang weeks malalaman

Hi po good evening. I am 19 weeks and 4 days po. And kanina po nagpa pelvic ultrasound po ako, gusto ko po sana matanong if ano po karaniwang weeks nalalaman gender ni baby kasi feeling ko too early po para malaman gender nya and Cephalic position din po sya. Any advice po #1stimemom #advicepls