So I had my 2nd trimester anatomy scan today, and in the scan they found a "bright spot marker" or a…

So I had my 2nd trimester anatomy scan today, and in the scan they found a "bright spot marker" or a calcium build up on the heart, they told me that a marker of this kind is usually found in cases in children that have Down syndrome, but I've had 2 screenings that tell me I'm very low risk of that and it's a 1 in 10,000 chance... So my question is, have any moms had this happen and what was the outcome?