I am a 45 year old women in good health..But lately I feel like I am wearing my heart out. I feel a pressure on my chest when I sleep on my back. I feel like I have to a take deeper breaths to get good air. My heart beat seems very strong and forceful like It is straining. I have no other symptoms. I have been to the doctor and they are doing tests... Thyroid, allergies and a halter monitor for my heart soon. When ever I have gone to the doctors, they always see a normal  blood pressure, EKG and blood work for me. Will they be able to detect  a week valve or heart disease with any of these tests? I am  anxious of the process to weed things out. I dont know what to do for myself because I think it is something serious with no time to waste.
Hello, the symptoms you are trying to explain are called orthopnea and paroxysmal nocturnal dyspnea in medical terms, as age progresses sometimes the valves in our heart withers away, so the blood which has to be pushed forwards moves backwards also, while it regurgitates back it flows back to lung ....as the space in the lungs which was meant for air is filled up by fluid which is regurgitating back from lung ...there is shortage of air available...so you feel breathless would suggest you to go ford echo tread mill test and pulmonary function test for ite kg can be normal 2 d echo is a specific test to see any valve leakage or any motion abnormality of heart walls