My 3 year old daughter is complaining of a sore mouth. She s about 37 tall, about 37 lbs. No medical history to speak of. She has all of her teeth, she has seen a dentist and he wasn t concerned about anything. She is complaining that her mouth hurts. I looked in with a flashlight but couldn t see anything. She was also out in the sun for 2 hours with no hat but that was more that 24 hours ago. She has been lethargic today, has not eaten much but has had juice and water.