Thanks for your question on Healthcare Magic. I can understand your concern. Possibility of musculoskeletal pain is more in your case because your pain is associated with specific movement and position. But better to get rule out heart diseases because you are having left sided chest pain. So first get done ecg and 2d echo. If both these are normal then no need to worry for heart diseases. Do following things for better symptomatic relief in musculoskeletal pain. 1. Avoid movements causing pain. 2. Avoid bad postures in sleep. 3. Avoid heavyweight lifting and strenuous exercise. 4. Take painkiller like ibuprofen. 5. Apply warm water pad on affected areas. 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.