My wisdom tooth

Going to the dentist is one of my biggest fears. Last week I had to visit mine because I had a cavity. I had a terrible time there but I though, well, I won't see you again till next year! But, when I woke up today one of my wisdom tooth was aching. A lot. I have had them for 4 or 5 years, they grew up well, there was enough place for them and m dentist has never said anything about taking them out. I need a remedy right now!!!