J.S.
Get the discharge in his eyes checked ASAP. It could be conjunctivitis aka an eye infection which is highly, highly contagious and needs immediate treatment. The fact that he feels warm would lend towards an illness rather than allergy, but you really should take his temperature so that when you call the pediatrician to make his appointment for tomorrow you can give them as many details as possible OR you can take him to Urgent Care.
EDITED because of rampant typos.