Q. I have toothache in my left front tooth. They were sensitive and I am using the sensodyne pro-namel toothpaste which was gradually making the problem better over time. However a few days ago toothache started in my left front tooth and the sensitivty has almost completely gone away in just the last 2 days since the toothache started. The tooth hurts when i put any small pressure onto it and has grown from mild pain from time to time to constant mild pain. What is wrong and what should I do?