fever?

i think i had a fever since yesterday.
so i go to c doctor this morning.
he asked me what's wrong w/ me.
i said, i think i got a fever.
then he responded quickly: "oh, let me put on the mask first"...
yeah.. i m probably contagious... what a careful doctor...
i said i can't fall asleep easily n feeling so tired for a week...
he said i m getting a flu but it's not exploded out.
now my body temperature still stays at 36.8 n it was 37 in the morning.
i know some people don't call this a fever.
but i just feel tired n headache...
i dunno... so i took a day off and mark all the lab reports.
and sleep.
i've slept the whole afternoon yesterday already but i can still sleep a lot today...
n sweat a lot too... hmmmmmm...
i have an invisible flu....