OH, gotcha...you want to know if you can infect someone from the bleeding in your mouth. Well, that's kind of a tough question, but personally I doubt that it is likely. If you aware of your status and it is negative, I wouldn't worry too much. If you still don't, I still wouldn't really worry. The stress of worrying about HIV can bring on psychosomatic symptoms, and these just make the worry and stress multiply, and you will have lost valuable time of your life living in fear when you find out that the test comes back negative. I speak from personal experience.