Spot on baby’s heart in anatomy ultrasound?

Hi! I’m just asking to see if this has happened to anyone else. I had my 20 week anatomy ultrasound, we were so happy to see our little boy just being so precious since my first pregnancy was sooo incredibly hard. Well a few days ago my midwife called me and said that there was a spot on our little boys heart and she was sending us to a specialist to get checked again. I’m trying not to worry about it or think about it much, because I don’t wanna stress out our little boy. But I cannot help it, I know I don’t wanna google it, because well google always tells you you’re going to die. Any help is amazing! Thank you.