Last week, I noticed that my lower lip felt odd. Then I started getting pain in my back teeth, top and bottom, on the left side. Next I noticed numbness in my chin and realized that the odd feeling in my lip was also numbness. Everything is on the left side of my face. It comes and goes though it is becoming more constant now. It is not horrible pain but it is uncomfortable. I had several teeth filled and one extraction on the left side about six months ago. I am wondering if this is a nerve issue or if I might be clenching my teeth extremely hard at night. I know I have clenched my teeth hard enough to wake myself before and I have had sore teeth afterword but I don't see how that could cause the other things.