For about a little over a month now my heart has been feeling like its going to pound right out of my chest. It hurts a little too. It doesn't happen all the time but enough to take notice and too make me uncomfortable. Actually a few days ago I passed out in the grocery store with my mom! I was sooo embarrassed I still am! I went to the hospital and they say nothings wrong but then why do I still feel this way? What could this be from?