Have you ever wondered how your gums can be glowing one day and bleeding the next? It’s probably gingivitis. This early stage of gum disease lurks out of sight, developing until your gums are swollen and red. Luckily, being the first stage of gum disease means it’s the easiest to reverse! But how do you fight back, and how long does it take to heal? The answer depends on your habits, your oral health, and how quickly you spring into action.