I always feel chest tightness and shortness of breath now. What's going on?

Always feel chest tightness and shortness of breath, this situation is first considered as respiratory system diseases, such as pneumonia, emphysema, it will cause chest tightness and shortness of breath phenomenon. In addition, when heart diseases occur, it will also cause chest tightness and shortness of breath, such as myocarditis, heart disease, etc.