My 19-yr old son just started college in the NE. He is experiencing flu-like symptoms, including severe pain in the lower part of his neck, achy, tired. He has tested Negative for flu and mono and tonsils look only a little irritated (according to doctor he has seen on campus). He was prescribed a Z-pac, just in case. I m concerned about this and would like to know your opinion. He can t see an ENT dr. until next week, unless he goes to the ER.