Sayang, I understand this must be worrying for you. Please make sure you follow up with your doctor or specialist for more detailed explanation and monitoring, they'll be able to explain what this means specifically for your baby and what the next steps are, okay? A few of my mum friends have gone through unexpected scan findings, and honestly the doctors are the best ones to give you peace of mind. Your OB might refer you for additional scans or specialist review, that's actually quite normal and helps them keep a closer eye on baby. Try not to stress too much in the meantime. Ask your doctor all your questions, they've seen this before and can explain everything clearly to you. Sending you a hug!