Baby's head 97th percentile?!

Gina 👧🏼mom 🤰with #2
Just had a 28 week ultrasound today. Baby is measuring almost 2 weeks ahead of schedule and her head is estimated to be gigantic!! Anybody else have experience with this? Did you find as you progressed into your third trimester that the measurements changed? I know it's definitely not a perfect science and I'm trying not to dwell on it  :)