Spider bites tend to look like nothing more than a simple bug-bite. Usually they are benign, or not even a spider bite. Ingrown hairs can also mimic the look of a spider bite. However, if the wound oozes, begins to rot, smell bad, hurt in the surrounding area, swell badly, sting, throb, puss, or begins to slough off, you should contact your doctor immediately. If you fell you have a spider biting you, take all of the sheets, covers, and pillow cases off your bed and wash them, this will kill any nibbly buggers you may have.