12 weeks, first 3 months

May ultrasound po ba ng 12 weeks or hndi sya required? Kse sabi sakin ng doctor 18 weeks daw ang morphology ultrasound. Ung 12 weeks daw para sa down syndrome at gender test. Pero ang daming nagsabi sakin na ibang mommies na meron daw 12 weeks ultrasound, so mejo confused kami ni mister.