Thanks for your question on Healthcare Magic. I can understand your concern. Yes, you should definitely consult your doctor again and get done chest x ray. Influenza viral infection of lungs can cause pneumonia, pleural effusion, pleurisy etc. And all these can cause sharp shooting chest pain. So get done chest x ray. If chest x ray is normal then no need to worry for these diseases. Take simple painkiller like ibuprofen or acetaminophen. Apply warm water pad on affected areas of chest. Don t worry, you will be alright with all these but first get done chest x ray. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.