congenital anomaly scan

To clarify mommy, hindi ka pa nagundergo ng CAS and you want to have one tama ba? So far TVS pa lang ba ang meron ka? Ang anomaly scan kasi is usually requested by the OB around 18-22 weeks (second trimester). Ang alam ko required routine prenatal care sha for all pregnant women eh so dapat proactive/automatic sha irerecommend ng OB by second trimester of pregnancy to check for any abnormalities.