Oh, you're a guy! Do the pains radiate up and down your arm or is the pain fixed in one spot in your arm as it is in your chest? I would not worry in the least. Tell me...did your father have a heart attack early in his life? Men follow their fathers in this regard. If not, don't worry. We all have odd pains here and there in our bodies. I would get active, stop coffee and booze, eat well and do for others. Could it be that focussing on pains and heart bumps and flips (which so many of us have, especially coffee drinkers) take your mind off what is really worrying you?