I am 36 years old and have been smoking marijuana since college mainly on weekends. Over the last 6 years I become a daily users, taking a few inhales a couple times a day. I quit about 2 months ago. Over the last year or so, i noticed that I have brown mixed in my sputum. Also after smoking I would have what seem to be restricted type breathing. Sometimes through the day I would fell a funny gas feeling in throat. I do not have a cough, but I force a cough to clear my throat and lungs. This is when see it. Mostly in morning, but sometimes throughout day. Back in October, I coughed up some blood and went to the doctor. I told him everthing, and he did a blood test, chest x-ray, and a Pulmonary Function Test. The blood test came back good, White Blood Cell Count 6.4, Red Blood Cell Count 5.22, Hemoglobin, 46.7, MCV 89.4, MCH 31.2, MCHC 34.9. He told me that the Chest X-ray was normal, and I haven't received the PLT results, but the technician told me that I had excellent oxygen level in blood, and exceeded the other test well. The tech stated that my minimums should be at 85% and I was up at 102 to 130% on most test. My doctor said he was to concern with the brown specs and the blood could have come from sinus drainage. It has not occured since. I also experienced a slight difficult breathing when irritants like dust where in the air. Over the last few weeks, my breathing has improved. Doctor also stated that I was suffering from Reflux and put me on Protonix. I'm been very anxious & compulsively about my breathing. I've been put on Anxiety med. Concerned still