Hi, I wake nearly every day to a blocked nose and throat with cough/ mucous/sputum and when I try to cough it out I get a very small amount of it out but it's viscous and sticky and has soot like particles in it. Depending on the amounts of particles present the color of cough is whitish/colorless/light or dark greenish/blackand jelly like in texture. The amount which comes out is so less that I sometimes think that mucous from my nose has somehow reached my throat and hence is coming out of mouth. The particles which come out are carbon like blackish and very minute and small. Please help me. Do I have any serious disease? Though I don't drink or smoke. I am a student and my age is 19. Please Reply asap!