You stand there, and look the dragon in the eye. In a split second you
were eaten by the dragon. Although the dragon ate you, it seems it only
ate you in order to get a giant rock that was lodged in its intestines
out. In you went from its throat to its intestines and out you came
along with your mother and the stone. It turns out, the dragon is
actually very friendly, just misunderstood by everyone. Also, Philip was
not killed, he just ran away and made it look like he was killed because
he was scared of dragons.
It turns out the dragon that swallowed you was magical as well. By
swallowing you, its magical breath went through you and changed you back
into a boy.