HELP! My German Shepherd puppy ate corn on the cobs!!?

I have a 5 month old German Shepherd puppy, and this morning he got into the trash and ate 3 corn on the cobs. He chewed the cobs to little bits and ate them, rather than swallowing large pieces, but I am still panicking considering what I've read online within the last hour. He threw up a little bit of the small pieces of the cob, and had a rather large bowel movement about 45 minutes ago that contained TONS of corn! I provided water for him, and he drank a lot as he always does. Since corn is passing through his system and he's pooping normally, he should be okay Right? Now I'm asking for mere opinions and advice,.. I will definitely call the vet asap if he develops signs of a blockage.