"So should I be worrying now?"
one of my dad's only good stories was borrowing someone else's DnD character to play for a night, and they had a bag of holding. the party encountered a dragon and my dad was like "Can i just stick him in the bag?" to the bafflement of everyone, but apparently...the DM said it was fine. so he stuck the dragon in the bag
later he heard back from the guy he borrowed the character from, and the dragon escaped and killed him in a later session, and my dad never played DnD again.