I m an avid marijuana smoker, but in the last month I ve only smoked out of tin foil. In the past week ive develop a worsening cough that is dry, persistant, and produces phlegm. However when the throat goes dry the cough only seems to worsen. I have cut out smoking altogether but the cough still seems to get worse. I have chest pains, headaches, and a pressure just above my collarbone in my throat. When I was young I had asthma but grew out of it, is it possible that it returned? Thank you for your help! I am also a male in his 20s if this information proves relevant