Hello, I would suggest that you schedule a dental exam. How long has this been going on? What was the something that you where allergic to? There are infections in the mouth that require medication to eliminate. Your dentist can determine if you have a common infection such as an oral yeast infection. Nystatin is an antifungal medication that is often prescribed. Viral infections often occur and resolve under two weeks. Comfort rinses that combine antiinflammitory medication and pain relief can be prescribed by your dentist. A more serious condition or a systemic side effect may be diagnosed. Take some antiinflammitory medicine such as Motrin or Tylenol. Keep well hydrated, take balanced vitamins, proper nutrition, and practice good day dental care. Avoid irritants such as smoking, alcohol and foods that are acidic or spicy. Rinse with alcohol free products. I would be glad to offer more suggestions if you provide additional details. thank you for your inquiry . I hope you find relief from my suggestions.