just started avelox 400mg daily today -only one dose so far but i...

just started avelox 400mg daily today -only one dose so far but i am so dizzy and tired i drove 3 blocks and had to return home...im supposed to be on this drug for 14 days because of a stubborn and nasty sinus infection that hasn't responded to biaxin, zpack or anything else...i cant imagine feeling any more wiped out ,tired and dizzy than right now and i just started it this morning.....ive read all the clinical studies and i hope they are right when they say that the bacteria are virtually wiped out by dose NUMBER THREEe