Spina Bifida

My 4 day old had his first appointment today and they noticed the fat on his back was disproportionate and it basically looks like he has a crooked butt crack, the doctor said she’s not overly worried because it could just look weird because he has no meat on him so he’s got a flat butt, but she’s gonna have him checked because it’s also a sign for spina bifida. Just wondering if anyone’s had something similar happen and what the outcome was, I’m scaring myself googling all these things (might be stupid but I couldn’t help myself 🤷🏼‍♀️)