Ultrasound Question

Has anyone been referred to a specialist by their OB/GYN because of a calcium deposit on your baby’s heart? My husband and I went in yesterday and found out we are having a beautiful baby boy 💙! However, when our doctor was going over the ultrasound with us they said they saw a small calcium deposit on one side of the heart, and if it’s on both sides of the heart it can be an indicator of Down syndrome. So, they want us to go to a specialist for a more in depth ultrasound. Just wondering if anyone had the same thing happen? My husband is freaking out a little, but I’m trying to remain confident that our doctor just wants to play things safe. Thank you ladies!!