Selamat petang! Hmm, I haven't personally experienced that, tapi one of my mum friends went through something similar during her scan, doc mentioned baby's head shape looked slightly elongated, and honestly it turned out fine after birth, kepala dia normal je. Baby heads can look different on ultrasound depending on angle and position lah, so I'd suggest asking your doc to explain more clearly what they're seeing and whether it's something to monitor or just normal variation. Kita memang worry sikit-sikit during pregnancy kan, tapi usually these things resolve themselves once baby is out, tapi do follow up with your doctor to set your mind at ease ya!