I have swollen tonsils for 2 months but have no pain and fever. And sometimes black mucus is also due to coughing and behind of nose . And today a little blood clot come out from throat or nose i don't know. By the way I do not even have cough and chest pain. But even then Black Mucus is sometimes. I am 20 years old and used to smoke cigarette also. But I have given up smoking for 3 months now.