Hello - Our son is nearly 3 - all week he has b...

Hello - Our son is nearly 3 - all week he has been ill - we all have - with terrible virus - coughing & no energy etc - he has been checked out by 4 GP's now - our regular GP could finally fit us in yest - his ears / nose / chest all clear - colour is good etc etc etc - he just REFUSES to eat anything & I am not kidding - he hasnt eaten a thing in days Im giving him fluids so I guess thats why the GP's are not concerned - but seriously how long can u survive on NO food?? He is normally a great eater & Im getting very worried. He still has a cough ( we all do ) but he seems ok other than that - I called Tresilian this morn & whilst lovely - didnt help much as they dont give medical advice & they told me to take him to RNSH or call Westmead - can anyone please offer me any help/ sanity ? Appreciated