Hello, I m 16, and of average weight. For some reason I have redness on my left cheek along with a few small red dots (needle tip sized), and a raw sore feeling on the left side and the underneath of my tongue along with a similar raw, sore feeling on the inside of my jaw, where my tongue rests. I am not sick, nor do I believe that I m getting sick. A few weeks ago I had a cavity filled but I doubt that has anything to do with this, the filling is not touching anything. I ve not recently eaten or drank anything rough, spicy, sour, acidy or anything else that could irritate my mouth. I do not bite the side of my mouth or anything like that either. I m just wondering why this is happening, will this subside within a few days?