Echogenic focus... Experience please???😒

So, my quad screen came back negative, 1 in 10,000 for downs, then i had my 20wk ultra sound and they said every thing looked fine but they did find a soft marker which was a bright spot on my baby girls heart, said it's a calcium deposit and usually clears up on its own and is very common in normal pregnancies, but could be a soft marker for downs, bit more then likely because every thing else looked great and my quad screen was negative Its nothing to worry about, help ladies i need some input to put my mind at ease please