I am 20 years old and experiencing discomfort in the left side of my chest on a daily basis. I am very worried. The pain has lately been developing under my left breast and down under my left side of my rib cage. I also get sharp pains in my left arm and armpit area, sort feeling like a pinching pain. Im also experiencing bad head aches almost everyday. Sometimes the sharp pains are even in my left shoulder blade it feels like. In the past two months there has been two occassions where if felt as if i was having heart palpitation and then my hands and face would get tingly and my hands would totally lock up and my speech was slurred. This would last about ten mins and then i would start to feel better. I have been to the ER both times this happend, where ive had a chest xray, chest ultra sound, and ekg done, all were normal. Do you have any idea what could be the cause of this?