Hello. I have studied your case. Yes it can be valve problem. An ultrasound scan of the heart, called an echocardiogram. This is a painless test which can confirm that your heart is large and dilated. You can make your self healthy by proper diet and adequate exercises, along with holistic approach like yoga. Hope this answers your query. If you have additional questions or follow up queries then please do not hesitate in writing to us. I will be happy to answer your queries. Wishing you good health. Take care.