Heart murmur

ka

My husband went to doctor care after work this past Thursday for feeling off. He was thinking maybe covid because he was exposed. Test came back negative but while waiting he almost passed out 3 times in 10 mins. They listened to his heart and said they heard a murmur. Did a EKG and saw it. I immediately set up an appointment for tomorrow (Monday) at the heart/valvular doctor for him to be examined. He’s been so weak this weekend. He’s slept a lot and when he gets up he says he can feel his heart beating fast and starts to get weak feeling. I’m SO scared. He’s only 30 but his grandpa past from heart disease at 60 and both his aunts have murmur which seems to not cause them much problem. The doctor said only go to ER if problems breathing or passing out or left arm tingling. We’ve been waiting patiently for Monday. I just pray they will check him and not reschedule for test at a later date. Any positive experiences with this type of thing? Prayers are greatly appreciated