Freaking out! 😩😩

So about a month ago, the doctor told me she heard a heart murmur in my little one (who is 20 weeks old today). We have an appointment with a pediatric cardiologist this week. Today I looked up online to find out potential reasons why she is sweating when she feeds. It said that if paired with a heart murmur it could mean a heart defect like some type of congenital heart disease. I am freaking out!!! I just want my baby to be ok! Anybody else's babies sweat while feeding and are just fine??