Thanks for your question on Health Care Magic. I can understand your concern. By your history and description, possibility of musculoskeletal pain is more in your case. But better to rule out causes pleurisy (inflammation of pleura) first. Common causes for pleurisy are pneumonia, pleural effusion, Pulmonary contusions etc. So get done chest x ray. If chest x ray is normal than no need to worry for these causes. Forceful nose blowing causes contraction of intercostal muscles. And this can be painful sometimes. So musculoskeletal pain is more likely. Apply warm water pad on affected areas. Start painkiller and muscle relaxant drugs. Avoid movements causing pain. Avoid strenuous exercise and heavyweight lifting. Don t worry, you will be alright. Hope I have solved your query. Wish you good health. Thanks.