When can i have ultrasound for the gender of my baby? is it safe to have multiple ultrasound just in case they cannot see the gender as early as 20w?

Kadalasan po sa 20 weeks pinag Congenital Anomaly scan para din malaman gender ni baby. if ever na hindi nakita dahil sa position ni baby your OB can request for repeat scan. tska po habang lumalaki tyan ng mommy or malapit na due e papa ultz uli yun para makita kung normal O naka breech ang baby.. Actually naka schedule din ako for Scan para malaman gender ni Baby this May pero gusto ko rin uli pag pa repeat utz around 6mos para final na ano gender ni baby