Bleeding gums is one of the earliest signs of gingivitis, or swollen and inflamed gums, typically triggered by plaque and/or calculus deposited below the gum level. If gingivitis is not treated, it will progress other serious conditions like loss of supporting bone and finally tooth loss. The best treatment of gingivitis is to maintain proper oral hygiene by brushing and flossing and the gums recover by some weeks. If bleeding continues even after two to three weeks, you should bring that to the notice of your dentist at the earliest time possible.