question: Hi, I have been getting this sharp pain every now and then to the point where it hurts to breath. The pain is normally in my shoulder blade, but it doesn t happen often. However, I do have greyish blackish spots in my phlegm when I cough it up or even blow my nose. It s gotten to the point where sometimes phlegm will just come up on it s own in the middle of me talking, I don t have to cough or anything. This happens on a regular basis. Does anyone know what this could be? I have a Dr. Appt on Tuesday.