Eifs on baby’s heart please help

Hi ladies, I had my 20 week scan and the baby was perfect by measurements, everything could be seen. The sonographer said she could see the four chambers of the heart, but on two chambers she saw 2 definite white spots and possibly a third on the third chamber, she said she would sent it to her supervisor and they would see if we needed to be seen further. I’ve been called for a foetal assessment with a specialist next week, I’m just wondering has anyone experience of this? Online I’ve read people with mostly 2 spots but the fact it’s three spots on three different chambers can someone help please? 😭