Thanks for your question on Healthcare Magic. I can understand your concern. By your history and description, possibility of musculoskeletal pain is more likely. But better to rule out cardiac pain as you are having left sided chest and arm pain. So get done ecg, 2d echo and stress test. If all these are normal then no need to worry for heart diseases. Apply warm water pad on affected areas. Avoid movements causing pain. Avoid heavyweight lifting and strenuous exercise. Take simple painkiller like paracetamol or ibuprofen. 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.