I'm experiencing a really weird feeling in my chest that sometimes eases up when I take a deep breath. My heart rate speeds up occasionally too. I did a spirometry test, which showed normal results with my fev1fvc at 98.8, and my oximeter reading is at 98. I quit smoking about 2 months ago, but I still have some burping issues from gastric problems. It's got me worried, and I'm not sure what's going on. Could you help me figure out what might be happening?