The red spot is gone also with the pain, it was just a small wound after all. But the thought of tongue cancer still there in my mind, whenever I fells pain, tingling sensation I always jump to cancer or the thinking that it is the first sign of cancer.
I often have the sore feelings on my right side, exactly like you mention it, like it was rubbing the tooth. I also checked it by an oral surgeon and he said nothing to be afraid of. I read on article and from a lot of people here that anxiety can cause a lot of strange sensation, including hot, tingling, or mild pain on the tongue. And the first time I felt this sensation is when I heard that someone died because of tongue cancer. I have this sensation for more than a year now, a month a go every time I fells sore on my tongue I try as hard as I could not to connect it with any kind of cancer, I try to connect it with anxiety. Now the sore sensation is still appear but not much as it was before, for a year I felt the sore sensation perhaps 3-4 days in a week, often for the whole week and it makes my week full with scary thought. Now, the last time I felt such sensation was 2 week a go and I'm able to keep it under control and not become a full blow anxiety attack like it did before.
We need to fight it, and disconnect the thought of such sensation with cancer or any other scary thought and connect it with anxiety. I know it is hard, I still have the sensation and for a minute or two I was scared of cancer but I must not allow my mind to wonder and make a negative projection on my mind, I need to keep thinking that this sensation is caused by anxiety. Yes it is not easy, but for me it work...it is a slow progression but it work. I think we need to learn that such sensation is nothing to be scared of, hot flashes, dried mouth, feelings that our tongue is swollen, etc, we need to understand it and learn from it that those sensation is caused by anxiety, nothing more. It takes times, and it won't suddenly disappear and some new strange sensation on different places will emerge and we just have to keep learning until such pain, sensation or whatever it is, is recognize by our brain as nothing to be scared of.
About the "what if" thought...this is the most annoying thing and in my opinion it is the hardest thing to stop. But we need to stop it, we need to stop over thinking. Again we have to learn about it, we have to learn to realize that by thinking "what if..." and then "what if", we are going to make a loooooongggg decision tree. Not going circle, but I think we're making a very long decision tree and thus makes us over thinking and makes us confuse, scared, paralyzed, and it is very stressful. We need to realize when we start to over thinking something and stop it immediately. Again I know it is hard and I'm too still learning it, but it work. As long as I start to realize that I over thinking it and stop it and repeat what the doctor said that it was nothing to scared of, what my psychologist said, what my friends here said, what my religion told me and any other positive thought, slowly but sure I stop over thinking the negative thought...then I try to focus on "now", I stop thinking about the future, and slowly its getting better. Again I know it's hard thing to do for us but it work, at least for me. I still learn this, and sometimes it went out of control and I need to take my pills to give my reality brain times to rethinking and catch up with my anxiety brain.
My therapist, also some of my friends here always told me that we can be cured, we can make this anxiety brain manageable but it all depend on us. We just need to learn again about our brain and our body, what is this sensation and how we perceived it. Learning is a process, and process takes times, we need to be patient with it.