Last year at cheerleading practice I felt like I couldnt take a deep breath and I was shaking un-controlably like I was cold (but I wasnt)...And they had to call the ambulance. In the ambulance before they put me on oxygen the checked my blood oxygen supply and it was only and 79% instead of 100%, so they put me on oxygen. Most of my breathing got under control witht he help of the oxygen once we got in the er. They took some tests and didnt find anything my temp. Was like 102.00. I went to some other doctors who couldnt find anything wrong, one doctor did a ultra sound of my heart and said everything looked fine. Its happend a couple more times at cheerleading/home and ive been able to do something myself to control it so it wasnt as bad and I didnt have to go to the er. Almost everyone thinks that its asthma but the doctors say they dont think I have it and wont check me for it. Also ever since I was little sometimes I have a sharp pain in my lungs when I try to breathe but it goes away usually after a couple of breaths but sometimes its feels sorta like pins jabbing ito my lungs and it hurts so bad!!