I quit smoking 6 weeks ago and since have had trouble breathing (mostly at night), then I can't back to sleep because I panic about not being able to breathe. I went to ER a couple of nights ago and my blood pressure was 184/101, they did an EKG, heart was fine, my lungs sounded fine . . . doctor says it's anxiety and put me on Xanax. I have a blood pressure cuff & keep checking and it has lowered, but not by a whole lot. Guess I'm still worried.