M.P.
I can't believe your doctors office can close like that without having someone oncall for questions! Does your insurance have a nurses hotline-it should say on the back of the card.
Is there any chance that he could have swallowed something metallic? If by chance it was a magnet you would need to get him seen immediately-that is a medical emergency.
I would probably go to the ER if I couldn't get him seen by a doc today. Those symptoms are very strange.