Not to be the downer...but my childhood Yorkie jumped off the rocking chair and did the same thing. We noticed that she started sleeping a lot after that, although not right away...maybe it was the next day. The vet said that she had had a concussion. But after letting her sleep in a darkened room a few days she was fine. Just make sure your little one doesn't start sleeping a lot all of a sudden. But I bet Teddy is just fine!
Take care!