DS (13 weeks) has a fairly pronounced forked gluteal fold (basically a big Y shape at the top of his butt crack!) and a very small, very shallow sacral dimple. I know these can possibly be a sign of spina bifida occulta, which my dad has, though it doesn't cause him any trouble. So I'm wondering if there's any point making a GP appointment or whether this would be an over reaction, since presumably even if it is SBO they wouldn't do anything about it? Neither the doctor at the hospital who did his newborn check, or the GP who did his 8 week one commented on it, but I got the feeling that neither were particularly experienced with babies 
WWYD?