Thanks for your question on Health Care Magic.
I can understand your situation and problem.
Yes, you should definitely
consult doctor, don't wait at home.
Since you are having
heart murmur, we should first rule out
heart failure in your case.
So better to get done ecg, 2d echo and blood pressure monitoring.
If all these are normal than no need to worry for heart diseases.
Another possibility is lung related causes like
lung infection or
bronchitis.
So get done clinical examination of respiratory system, chest x ray and PFT (Pulmonary Function Test).
You may need antibiotics, antihistamines, inhaled bronchodilators and inhaled corticosteroid.
So better to first diagnose yourself and then start appropriate treatment.
Hope I have solved your query.
Wish you good health. Thanks.