 [ 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 breathing problems after upper respiratory infection are common especially bronchitis and asthma but you need to visit a doctor to confirm the cause and diagnosis so that proper specific treatment is initiated most probably you may be suffering from bronchitis