My son has just accidentally swallowed a small metal marble a few minutes. he is not choking. he drank water without any issues. should i be worried. should i do to the hospital to check where the marble is?

If no symptoms...: Kids everywhere swallow all sorts of stuff. A little marble or bead comes out the other end, the butt. We don't have to look for it to come out, but just presume it does. We can't worry about every child, so when do we worry? Batteries or magnets... those have to be found and removed by doctors. Kids whom we suspect are habitually eating objects (called pica) can be x-rayed to check their insides.