I usually get sharp pains in my chest(right inbetween and above my breasts) when I'm hungry. Most of the time it goes away after I eat. But sometimes it doesn't, like right now. Right now its not as bad as it usually be, its just like a slight pain. But most of the time its a really painful sharp pain, that makes it hard to concentrate when my instructors are lecturing. What do you think it could be causing these pains, other than hunger?