For immediate relief from severe gum pain, you can apply an over-the-counter topical gel containing benzocaine (such as Orajel) directly to the painful area. Taking oral anti-inflammatory pain relievers like Ibuprofen (Advil) or Acetaminophen (Tylenol) will also help reduce both pain and swelling. Gently rinsing your mouth with warm salt water can further soothe the gums. However, because your pain is 'unbearable,' it may indicate a serious underlying issue like a dental abscess or infection. These temporary remedies should not replace professional care; please schedule an urgent appointment with a dentist for a proper diagnosis and treatment.