Cavities?

Today is the day I go visit the dentist.  I hate the unknown of whether or not I have cavities. I feel pretty good about not having any. I have been brushing my teeth and flossing everyday, but they always seem to get their crazy tools in my mouth and make things seem worse than they are. My mouth will bleed and then she asks me tons of questions while my mouth is open. My fingers and toes are crossed. No cavities, no cavities!