Okay, so, I just got 3 fillings done all on the bottom. It was 19,21,28. Tooth 21 has been hurting so bad when I bite down. It feels like someone is driving a metal poker into my tooth or something. It makes me wanna jump off my chair. I called the dentist and they can't fit me in for another week. She mentioned something about they 'overfilled the cavity'. What does this mean? And how can I relieve the pain that comes from putting pressure on the biting surface of the tooth?