Pain In Lungs Severe In Morning. I Go To Sleep

Pain in lungs severe in morning. I go to sleep fine, starts in middle of night and I have to find comfortable ways to lay to go back to sleep. Extremely painful in mornings, especially neck movement. Putting my chin to my chest is unbearable in morning as I've been experimenting with it it's freaking me out so bad. But as I lay here in bed about to go to sleep everthing is fine. I am a smoker.