Hello, I am an 18 year - old male. Since I was 14 or 15, I used to get this kind of pricking on the left side of my chest which used to be for like a second or two. It used to be infrequent those years. Last year, however, the frequency increased and I also began feeling heaviness on the left side of my chest and soreness. That same year, I was watching a movie in the cinema when I felt the pain and kept holding that area (which is what I normally do) and it went nearly for a minute. However, it ended for a month or two. Just a couple of days back, I got the pain again. Just to let you know, I have no family history of heart diseases and I used to drink a lot of Coke (Coca - Cola) which I have reduced considerably due to my assumption that that might be playing a role in the pain. Thanks for all suggestions.