M.C.
S.,
You've gotten a lot of GREAT advice here. If you're going to wait until Monday to call the Dr., see if he is uncomfortable lying down. That's a classic sign of an ear infection.
When you say he doesn't want to eat his usual things, is he eating anything? Also, don't mask his symptoms before going to the Dr. Tylenol not only takes down the fever, but relieves aches and pains that may lead the Dr. to diagnose correctly.
Good luck! Hugs and kisses are the best medicine until then.