When did you get your ears pierced? How long have they hurt? Is this your first ear piercing? Sometimes how long the pain lasts depend on the person. Also, depending on how you're sleeping could cause some pain to linger. If the area around where you pierced your ear starts to feel inflamed or thicker than usual and it feels constantly itchy, then they might be infected. Make sure you're constantly cleaning around the piercing with the stuff they gave you. If they didn't give you anything, use rubbing alcohol.