CAS ultrasound

Hello mommies! I am scheduled for CAS this month. I live in QC po. May mairerecommend po ba kayong hospital na nagooffer ng CAS ultrasound around the vicinity? If meron po, how much? Sa Manila pa kasi yung OB ko eh pati 4k yung offer na CAS dun. Naghahanap ako ng mas mura sa 4k. Thank you! ❤