33 y/o M pt, childhood asthma and no other medical h/x, 5'9" 195 lbs- Today while exercising (my usual routine) I felt the sensation of a bubble inside my right chest cavity... seemingly in the lung. I stopped and the sensation subsided within 30 secs or so, so I started exercising again... Within minutes I felt lightheaded and my jaw felt like it almost wasn't there, like it was too relaxed... I stopped again. What could this be? And should I not exercise for the moment?