Over the past month, but especially the past week, I've felt like I have this soreness in my chest that's preventing me from breathing in the amount of air that I need. I'm a 23 year old female college student at UCF. I've gone to a doctor on campus and they told me that my pulse and lungs sound fine and to take alleve for inflammation (I had pain when she was feeling around my diaphragm). This was on Tuesday. The sensation has only grown more constant. What could be wrong? What can I do?