If your 3-year-old daughter is experiencing severe ear pain, the best solution is to give her acetaminophen (Tylenol, Tempra, etc.) to help relieve the pain. Acetaminophen is available in various forms such as liquid suspensions, and the dosage should be based on your child's weight. If the pain persists for more than a week, worsens, or is accompanied by other symptoms like fever or ear drainage, it is important to consult a doctor.