Im experiencing some tightness on the chest, not painful but the discomfort is causing difficulties in breathing a bit ?

Chest tightness: Chest tightness can be cardiac, Pulmonary embolus, pericarditis, pneumonia, asthma or reflux.

Chest symptoms: If you're experiencing chest tightness and a feeling of shortness of breath while at rest and not with exertion, anxiety and tension are the usual cause. If symptoms are brought on by physical activity and relieved by rest, anxiety may not be the cause and investigation is warranted. Other worrisome symptoms would be associated cough, wheezing, palpitations,fever,chills,sweats,pain on inspiration,