Haha this is so common lah, especially at 27-30 weeks! Honestly, at that gestation sometimes memang sulit nak tengok clear sebab baby position and angle, so different doctors baca differently, I punya mum friends pun ada yang dapat conflicting results multiple times before delivery, so you're definitely not alone! The safest bet is tunggu delivery je, or kalau nak tahu betul-betul sekarang, boleh try 3D/4D ultrasound at a specialist clinic yang lebih advanced equipment (tapi even that not 100% guaranteed lah). Either way, you guys will find out soon enough, and yang penting baby healthy kan!