Every since I can remember I have had a quarter/half dollar size extra piece on my lower left rib cage. There is also a dime size bump that moves if I push on it. Lately it has been uncomfortable for me. Sometimes it is so uncomfortable that I can not sleep on that side at night & occasionally when I breathe it feels as if it is rubbing on something. I know this seems weird but, does anyone know what this might be or have any suggestions?