I have a hole in my gum behind my tooth. It came a week ago, when I brushed really hard. My gums started leaking blood and pus . I m really scared, and I have no dental insurance. Is this cancer? It doesn t hurt anymore since the first day, but it isn t healing . There is something exposed, either bone or tooth, but I can t remember if I had that wisdom tooth removed or not. I have panic disorder, and my husband thinks I am making a big deal of this. What is it, and what do I do?