Is my 28 week sono to check on my lil Khloe's heart. They found a white spot and my doctor said it was a marker for down syndrome. That was the only marker she found however but told me not to worry. I haven't been stressing out about it but since it is tomorrow I am now worried. She asked if we wanted to do the blood test but we didn't since we heard that it can be false more than half the time. Anyone else have this "white spot" and it turned out to be nothing? Should I have done the blood test?