Waalaikum assalam! Sayang, this is something you really perlu discuss dengan doctor/OB-GYN mu, jangan worry sendiri dulu, okay? A few of us went through unexpected scan findings, and honestly the specialist dapat explain better than anyone what it means for your baby specifically. Since everything else looks normal that's good news lah, but the doctor kena monitor this properly throughout your pregnancy. Jangan stress, just make sure you follow up with your scans as scheduled and ask your OB semua questions yang ada in your head, that's what they're there for, sayang!