For temporary relief of your tooth pain and headache, you can take over-the-counter pain relievers like Ibuprofen (400 mg) or Acetaminophen (500 mg) every 4 to 6 hours, following package directions. However, since these symptoms have persisted for a week, they likely indicate an underlying dental infection, abscess, or sinus issue. Painkillers will only temporarily mask the pain; they cannot cure an infection. You must see a dentist promptly for a proper diagnosis and treatment (which may require prescription antibiotics or dental work). If you develop facial swelling, fever, or difficulty breathing, please seek emergency medical attention immediately.