I quit smoking April 19,2011. I was getting bad lung pain on & off until about 2 weeks ago. i now have a dark yellowish phlem in the morning and sinus infection. Sometimes my right lung will make a very low click when i take a deep breath. The past few days * on & off i will get mucus in diarrhea. I am lactose intollerant and when i eat some greasy food my nose gets itchy ( guessing iam allergic) i have been under a lot of stress ( loosing my dad suddenly arpil 16 then my dog april 22nd... any idea if the mucus in diarrhea is from my body cleaning itself from quitting smoking... sinus infection... stress or ????