So 2 years ago my son had a heart murmur detected by 2 doctors when we went for test the doctor said nothing serious or to worry about and discharged him. The last couple of months up and down he’s been complaint of chest pains he’s been really sleepy (he’s 7) sleeps every chance he gets. Took him the doctors and he’s said he hears heart murmur I explained he’d been discharge and doctor put him through for every blood test ect. He wasn’t happy with how much his heart works. Any advise I can’t help but worry