I often wake up in the middle of the night with chest pains, headache and difficulty breathing. I smoke, and the more I smoke a day makes it worse.?

Smoking & chest pain. This really is of concern. It could be an anxiety attack , bronchospasm (which is wheezing) or hear related. Heart related problems include fast hear rate or decreased blood flow. You need to have an evaluation immediately.
See a doctor. These symptoms sound serious and should be evaluate asap. This could indicated serious disease to your heart and/or lungs. Without speculating further you need to be seen and treated!