I am a seventeen year old female. For the last couple of weeks, I have been having a sharp pain that lasts for a few seconds right underneath my left breast. The pain would be a 7-8 (with 10 being the most painful) and last anywhere from a couple of seconds to more than ten minutes. However, lately, the pain has gotten worse (up to 9-10) and come more often, to the point that I must stop whatever I'm doing and concentrate on breathing. The pain is a sharp stabbing one, and whenever I breathe in or out it is as if a hot knife is being wedged between my ribs. I have a slight cough that I believe is credited to a cold that I have caught, but I have no nausea nor fever. Sometimes the pain moves to my right side or up my left arm or into my stomach area. Recently, I have had chest pains (6-7) that feels as if my heart is squeezing itself. I am also plagued by constant migraines and shortness of breath as well as increased heart rate. I was put on some medication (Motrin 600 mg) however that did nothing to relieve the pain. I have gotten a blood test and a xray, and nothing has come up that is out of the ordinary. I have never smoked or done drugs or alcohol, nor been pregnant. I am healthy and relatively in shape.