Once you have a fever your body is fighting it, so it sounds like all this did was speed things up. I find with Flu it takes about 8 hours myself.
However it can throw your system off for a bit before and after.
The part I do not like is the dormant period, from time of infection until time of fever. I find it can take 2-3 days of feeling off before I get the fever and get rid of it. Once my body starts fighting it, I have a very violent 8 hour period of high fever and then serious sweating. Then its gone.
I find Vitamin D seems to help prevent catching it.