My duck swallowed a small push pin about 4 hours ago. It was the length of a pinky nail with a small head on it. He seems fine and is eating, drinking, and going to the bathroom. I haven't noticed anything unusual or out of the ordinary with him. He is only 4 weeks old. I've been checking every time he goes to the bathroom but so far nothing. Should I be worried or will it pass? Thank you for any help!