Hi, for the past two weeks I've had a lump on the side of my face right next to the opening of my ear and it somewhat reminds me of a blister. When I place pressure on it or move my finger over it it feels like a lump of water is inside. It is bruised and is about a fingernails length long. I'm curious as to what it may be or whay caused it because I can't recall anything hitting that area to cause a bruise