Your symptoms are most likely due to dental plaque or tartar buildup, causing gum inflammation, along with erupted or misaligned wisdom teeth irritating the surrounding gum tissue. This can lead to significant pain, swelling, infection, and discomfort that may spread to nearby teeth. You should visit a dentist for an examination and an X-ray to assess the position of the wisdom teeth and the extent of gum or tooth involvement. Treatment may include professional scaling to remove deposits, medications for pain and infection control, and, in many cases, removal of the problematic wisdom teeth if they continue to cause symptoms.