Anatomy Scan- Calcifications?

Robin

This past weekend I had my anatomy scan at 20 weeks. Apparently, baby wasn’t cooperating and was not positioned correctly, so they weren’t able to get a good look at the four chambers of his heart, and additionally said that they found some calcifications in his abdomen. I have no idea what this means! I don’t want to worry! Has anyone else been told this, or know anything about this? Thank you!