 [ Symptoms ] recently developed some breathing issues and have a soreness of lungsany possibilities have had sinus infection recently but got over that but about 2 weeks later started having trouble breathing no cough no injuries [ Disease ] i suggest you return to your health care provider for a re check you could be experiencing a new illness that is unrelated to the sinus infection or perhaps it was not a sinus infection after all but a virus that has now gone down into your lungs regardless if you are having trouble breathing it is worth getting checked out hope this helps