dear user chest pain is acommon problem of adult age and have more than one cause for investigations costochondritis is one of the most common causes as it cause inflammation of costochondral area and causes pain with laughing or breathing second cause is chest infection as these causes pain of chest and need to be examined clinically by your doctor some times there is myococrdial infarction may cause that and you need to do stress ecg test to role that out severe effort also that causes your fatigue in this age considered main cause of these symptoms also stress and anxiety have great role in these symptoms so try to avoid stress and any psychological troubles wish you healthy life