Asymmetrical fetal growth.

Amanda
Has anyone else been told that their fetal growth is asymmetrical? 
Had an ultrasound about 2 weeks ago and was told this and that he's asymmetrical in the 26th percentile. I did some reading and figured out that this usually means the baby's body isn't growing as quickly as the head and brain. I have to go back for another growth ultrasound in 2 weeks. 
Has anyone else gone through this? I'm a bit worried about it.