i'm 18 and this moning when i started to brush my teeth i noticed a dark red bump on my lower right gums, where my wisdom teeth would be. However my wisdom teeth still have't come it, at all. The bump looks like a perfect round bubble filled with blood. It doesn't hurt, so i have left it alone for now. It's about the size of this "O" maybe a little bigger, and it's a perfect circle. What could this be? What should i do?
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