Mommy I don't want to die!!!

Jaxon came up to me tonight scared and crying. He said "Mommy I don't want to die!" I asked him what was wrong and he said he thought he had swallowed one of his metal balls. I asked him "Well did you or didn't you?" He told me he wasn't sure. He remembered having it in his mouth but didn't remember if he took it out or swallowed it. I assured him that he wouldn't die and if he did swallow the marble, it would eventually "come out!" He laid down on the couch and was sound asleep within minutes. After he was asleep we went to count the metal marbles and none were missing.