Dizziness Sulfur Taste In Mouth I Have COPD High Blood

Dizziness sulfur taste in mouth I have COPD high blood pressure due to stress low-level anxiety I do get chest pain from the COPD it is a stabbing pain on left side it's not deep chest x-ray couple weeks ago show chest with clear nuclear cardiogram one year ago said I was ok they tried to get me on the treadmill and could not do the test they did not get my heartbeat t0160 per minute so I feel that the test was inaccurate I have leg pains