For about a month I am feeling some kind of discomfort in my left hand side of body near my chest and ribs. I don't feel any pain but there is this constant discomfort. I don't know if it is just a feeling or not. Sometimes it is in my left chest area sometimes near my armpit or below it. I don't notice it when I am concentrating on something else but I become aware about it when I am sitting idle. It is worse during night time and I am unable to sleep . I keeps worrying about it most of the time.Can anyone give any help or advice??