I have a problem with my teeth. I have 5 cavities that are in bad shape. I had 4 more that I had filled before I got pregnant. The dentist said they are so bad that if I don't have them filled soon we'll be looking at root canals, etc. They said it was safe to use novacaine in the second and third trimesters, but I haven't done any research on this so I wanted to find out if anyone else has gone through this. The cavities are very deep so I definately have to use novacaine. I had intended on waiting until after I have the baby to fill the rest of them, but root canals do not sound fun to me. What's your advice?