I was eating cereal just now and a chunk of my tooth just fell out. It felt like the part that came off just crumbled and a big part of my tooth fell apart in piece. There is not a big hold on the side of my tooth. It's too late to go to a dentist, what should I do? it is a pretty big hole, off one of my bottom molars the tooth right below my wisdom tooth. I have no idea how it happened. Will they remove the tooth, have it filled, will I need some kind of expensive procedure?

There is now a big hole on the side of my tooth**