Thanks for your question on Healthcare Magic. I can understand your concern. In my opinion, you should definitely rule out heart and lung diseases for your symptoms because your symptoms are not improving with pleurisy treatment. So consult doctor and get done ecg and 2d echo to rule out heart diseases. Get done chest x ray to rule out lung infection and pleural effusion. If all these are normal then no need to worry for major heart and lung diseases. Sometimes simple musculoskeletal pain can also cause similar symptoms. So avoid movements causing pain. Avoid heavyweight lifting and strenuous exercise. Apply warm water pad on affected areas of chest. Take simple painkiller and muscle relaxant drugs like ibuprofen and thiocolchicoside. Don t worry, you will be alright with all these. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.