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 since it is left sided chest pain, better to rule out cardiac cause first. So get done ecg. If ecg is 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 painkiller and muscle relaxant drugs. Don t worry, you will be alright with all these in 1 week. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.