About a week ago, I burned the inside of my top gums just above my teeth on the left side. However, I keep scraping it with my toothbrush when I brush my teeth which is preventing it from healing. Tried gargling with Scope mouth wash but it does not help. I am diabetic and have metal in both knees so I have to be careful not to get infections. Is there something else I could gargle with to clear this up?