Bright spot on heart

Emma • My wife (left) and I are expecting our first in September.
My midwife called me today to follow up after my anatomy ultrasound.  Apparently everything is perfect except my baby girl has a bright spot on her heart.  Apparently, it can be a marker of Down's syndrome. She doesn't have any other indicators that she has Down's syndrome.  I am going in for bloodwork and another ultrasound this Friday but I am so worried about my little girl.