Hi, I had a tooth extracted 3 days ago. While seeing the dentist, I asked about a problem that came up 5 or 5 days before. My teeth on the upper right and in the back seem to hurt non stop and have become EXTREMLY painful when I drink anything even slightly warm or cool...hot or cold is unbearable. My dentist checked and could not find anything wrong except the fact that my gums are receeding which, due to root exposure, could definately cause the pain. He gave me a prescription strength toothpaste that he said should help. My question is, how long after starting the toothpaste, should I starting getting some relief? I'm losing weight from not being able to eat.