I believe I was bitten by a spider about two weeks ago. The bite is on the inside of my ear. Initially, it was sore to the touch (almost like a bruise), but that pain went away about two days later. Now it has form a painless blister. While cleaning my ears, I accidentally popped the blister, and there was some thick white discharge and a little blood that came out. The blister is small, about the size of a pencil eraser. Does anyone know if this is in fact a spider bite, and if so, should I be concerned?