OMG - I was eating something yesterday and I got this sharp pain in my back tooth, and I didn't think anything of it, but today, well now actually I am eating dinner and got the same pain again...

Please someone lie to tell me I don't need to go a dentist for a filling I have never had to have one before and have been told they hurt a lot! I hope its just sensitive for what ever reason, and hey maybe it will get better by itself?

I have never needed one before, does it seem like I might have a cavity? OMG I thought my teeth were strong, I clean everyday, how can I make it better?