I m 15 and I m had a chest pain on my left side then it went away but now I m all nervous and acared because my back feels numb. No more pain but I don t know if it s my anxiety or if I should be worried. I just had a check up with the doctor . My heart pulse is fine and everything. I suffer from anxiety attacks so I was thinking that it might just be my mind making it up becaue it s happened before. The only reason that I m worried is because I haven t been eating very well for a while now due to some stress issues. Are the warnings of heart attacks very noticeable ? How long do they last until you get one ? Should I even be worried ?