41 year old male 6 feet 3 inches 17 stone. cutting down on smoking trying to stop(down to 4/5 cigs per day) excercise consists of cycling average 60 miles per week. Over the last few months i have gradualy been getting worse. Ok most days but on an evening i get a sense of my lungs filling up (drowning sensation) a tightness across my chest and back, then the cough starts and it gets worse when i go to bed and lie down. After lying down sometimes i cough to the point of nearly passing out, my vision goes i get severe pain in my head. I sort of come back round from the cough fit and i can have produced a huge amount of phlegm during the coughing fit. It can last for several hours sometimes all night. but it goes away again and i spend most daytimes ok (sometimes a bit wheezy). I have been to doctors, had chest x ray last september (ok) spirometry test (past ok), now on 10mg Loratadine as docs grasping at straws thinking i maybe alergic to something. Also been referred to a sleep aponea clinic even though symptoms are present before i get to sleep. (docs grasping at straws again) any help, advice or similar would be greatly appreciated as i am at the end of my tether. Writing this at 5 am after a bad 3.5 hrs sleep woohoo.