sounds like my DS at that age, we went to four different GP's and his fever was constant for over a fortnight. the panadol helped but then it came back up, FINALLY one doctor decided to actually look in his throat and his tonsils were green! thats why he wasn't eating or drinking either, has your GP checked in his throat, alot of docs don't seem to think of it at such a young age, even though they put everything in their little mouths!