I m 38 yr male and from past 1.5 months feeling difficulty in breathing at times. From past 2 days having difficulty again even speaking causes exertion. Have done ECG, and plasma heparin blood test. ECG is normal, and hs TROPONIN-I (ECLIA) is less than 0.42 one doctor says angiogram required other says not required . We don't want to go for angiogram as of now. But even after 2 days there isn't much improvement.. I have a bad routine n in past had acide reflux issue ...but it was slight. Looking here for advice