hi i'm 22, female, and just curious about this painful lump that is growing just below my collarbone, i was wondrin if anybody could help me find out about this, before i even go seek a physician about this, its a lil painful, and its growing a lil faster than i expected, i just found out about this, a week ago, and i've been observin' it for the last couple of days, its getting bigger each day and painful. is this cancerous? what should i do? :-(