Tooth pain!

I have a horrible toothache that's prohibiting me from eating, it's excruciating. I have made an appointment with my dentist, but because I am pregnant, he didn't prescribe me anything for the pain. He suggested I take OTC Tylenol. However, Tylenol isn't touching the pain at all. Has anyone gone through this? What can I take that won't harm the baby but will make it so I can eat a decent meal???