even with out a fever you can still be sick. you could have a virus that is going around. but with sore throat and swollen glands could possibly be strep throat which can in some cases make you have nausea. you do not always run a fever with strep throat. i am not a doctor but it does not hurt to go to the dr. the worst thing they can say is it is a virus and it has to take it's course.
i feel hot on the inside but no fever. i have a stomach ache and my throat hurt and glands feel swollen.