For about a month, I've been having a pain on only one part of my gums. The part in between two teeth hurts really bad, but that's the only area. It's really sensitive so I tried brushing my teeth gently but that hasn't changed anything. I floss regurarly and brush my teeth 3 times a day. Everytime I floss or brush though that part of my gums bleed. Anyone know what it is and what I can do for it?