Suffering Newbie

My symptoms appeared several weeks ago, and after several unpleasant procedures and many frightening moments, I'm still trying to figure out how to live with this mess. It's 2:30am on my second sleepless night, every time I lay flat I get pressure, burning, and shortness of breath. It's alittle better when I try to sleep sitting upright. To complicate things, I use a CPAP which seems to make things worse. I'm taking my meds and feel fine all day, I'm just really struggling at night. Any thoughts or suggestions out there?