I have been having heart palpitations for over 6 years now. I get them when I'm tired, eat horrible and are stressed out. I have gone to my doctor and have tests but all come back good. My doctor told me if I feel a pain in the middle of my chest then it's a problem. I'm really starting to not like this feeling. Why does this happen? How did this happen to me. I'm 38! I have a long life a head of me I hope.