I have been experiencing shortness of breath after short exertion, feeling of breathlessness and serious fatigue. I have have had heart and pulmonary workup all within normal range. I have serious allergies have been coughing, sometimes dry and sometimes with clear phlegm. I am a female, 66 yrs and in reasonably good heath. I am a non smoker, take medication for high blood pressure, lisinopril 20/12.5, protontic for acid reflux 40mg. I have also been diagnosed with pvc s with are very prevalent and prescribed mertoporol 25mg, (not the succinct - was told to take is as needed) which I have not started yet, due to confusion over how to take it - do I take it with HB pressure meds or at night?? because it could make me tired? Also have a tooth that has been giving me trouble for weeks, infected, waiting for it to clear to have root canal or extract...taking antibiotics - just started. Please help!!