How long it takes for swollen gums to heal on their own needs to be determined on an individual basis, some people may heal on their own in about 3 to 7 days, while others may not. Gum lumps are related to many factors, and if the gums are only swollen and painful due to improper teeth cleaning, they may usually heal on their own, in about 3 to 7 days. However, there are some people who may not be able to heal themselves after experiencing swollen and painful gums, for example, they may not be able to heal themselves after developing diseases such as wisdom tooth pericoronitis, gingivitis, periodontitis, and pulpitis, and they need to see a doctor in time for checkups and symptomatic treatment. If there has been a significant swelling of the gums, it is recommended to consult a doctor in time, usually need to pay attention to personal oral hygiene, keep the oral cavity clean.