Thanks for your question on Healthcare Magic. I can understand your concern. By your history and description, possibility of blunt chest trauma is more likely. And this can cause musculoskeletal pain. But better to rule out internal lung related injury first. So get done chest x ray . If chest x ray is normal then no need to worry much. Apply warm water pad on affected areas of chest. Take painkiller and muscle relaxant drugs like ibuprofen and thiocolchicoside. Avoid movements causing pain. Avoid heavyweight lifting and strenuous exercise. 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.