Hello
There is a misconception that  in 
typhoid fever only boiled or hot things should be given diet . This is misconception and myth . 
One more thing in rural area that Intravenous drip or glucose ( as you mentioned in your query )is a cold thing or cold remedy . 
Let me explain that intravenous drip contains glucose, ( dextrose ) in various strength, saline , mix , elctrolyte-M , invert sugar , plasma expander etc. 
This type of fluid is given for many purposes  as when doctor don't want oral medicine ( for  fear of 
vomiting etc). 
Typhoid ( as you mentioned ) is an 
intestinal disease and water born infection caused by 
Salmonella A B AH OH ( four strain).
So  Get in blood examination for 
Widal test ( typhoid confirmation test ) , serology test for typhoid fever.
If your treating doctor advised Intravenous fluid ( glucose ) get it at once .
Complete treatment is important in this fever.Usually the course of typhoid is 5 days ( now a latest treatment ) while it is 14 days - 28 days according to antibiotics used.
Good luck.