I was hit by a car a few years ago. Other than scars on my leg and head, I seemed fine but as years have gone on I receive a sharp pain on the left side of my chest for a short period of time. The pain used to show up at least once a day but then I started getting it less often but lately it has been occurring more than once a day. I have seen a heart specialist and they said that it wasn't my heart but no doctor has told me what it is. Has this happened to anyone?