Did He or Didn't He?

Yesterday morning, about 10 minutes after he woke up, Ryan realized that he had lost a tooth. We can't find it. We search all around and in his bed to no avail. So, did he swallow it? This is a child who will let a tooth hang on by a thread for days rather than pull it out, but this one didn't seem to be all that loose. I had to double check to make sure it was a baby tooth. I had begun to think all my shouting about "teeth rotting out of your head" in an attempt to get him to brush better, might be coming true. But the tooth fairy did show up and leave $5, so either he/she knew where the tooth was, or she doesn't actually require an even exchange of tooth for cash. He's not sure which, and frankly doesn't care, as long as he got some bucks.