Anatomy Scan 20weeks

I just got a call from my Dr's Nurse saying the anatomy Scan all looked great and baby was growing. BUT her head was measuring small? They are sending me to get a second ultrasound (opinion) . Probably in the next few weeks. Dr. thinks it may be due to the position of the baby. They just faxed my paperwork to the office I will have to go see out of town. I'm a little nervous, since I went straight to Googling (Baby Center) for answers.

Has anyone had this issuse and baby was fine? I'm worried. It's my husband's 1st (technically 2nd since we had a MC right before this one) but would be my 3rd child (4th pregnancy). He is at work right now and I don't want to text him and make him worry(he worries enough).

Thanks and sorry for the vent.