EIF (white spot) on baby’s heart???

Had my anatomy scan today at 17+2. All blood tests have come back normal and literally everything else looked perfect for her. However, they did find she has a white spot on her heart. They said it’s most likely calcium buildup but we are doing a repeat ultrasound in 4 weeks to monitor it. Of course now google is telling me this spot is a soft marker for downs, and even though my DS blood test came back negative I am freaking out!! Did anyone else’s LO have this??