I've never noticed hair in any of my ultrasounds. If I have another before she's born, I'll have to ask if they see hair. My son was a baldy with a sprinkle of white fuzz until he was about 18 months and I clearly remember one incident of heartburn because I was wondering what the heck it was until my coworkers informed me. With this one, I've been getting some sort of reflux that burns the back of my throat when I lie down. We joke about how she's bound to be the exact opposite of her brother, so I wouldn't be surprised if she had a head full of hair. That's actually what I was expecting the first time, but somehow ended up with a baldy turned blondy.