Ventricles in baby's brain.....

When I went to my anatomy scan all was well except for the ventricles in my baby girls brain were enlarged...... The doctor seemed very concerned and rushed me down to lab to do the Down syndrome testing and a couple other things I believe..... I should be getting a call back about the results today or Monday.. No one in my family has ever had any type of disability. I'm very nervous and worried for my baby girl. Has anyone ever had this happen to them????