Hi. I'm 21 and recently, I have experienced random shortages of breath caused by my heart beating really strongly and slightly faster which also makes my chest hurt and goes up to my neck and somehow shrinks it. This happens when I sit, stand...whenever. It started three days ago and it's really bothering me. I tried resting more and all that but nothing helps. I love my work so I don't think it's because of stress. However, I have horrible housemates who tend to party several times a week so sometimes I don't get my sleep. But although I have slept the whole night and had my rest the heart thing won't stop.