hard lump on chest below clavical
Hello, I am a 30 year old female with a hard lump on my chest bone below my clavical. It is about 2 inches in diameter, doesn't move, and feels like it's connected to my bone. It has been there for about a month and seems to be getting bigger and is starting to be visible to the eye. It sometimes hurts but only at night. There is not a bump on the other side either and it wasn't there a month ago. I do have an extensive family history of a wide variety of cancer, but nothing of the bone. Any advice???