I developed an acute bacterial sinus infection (frontal and behind
eyes) following a cold...waited 13 days (to make sure it wasn't viral)
to get first antibiotic. 10-day course of Augmentin helped a bit but
symptoms came back, worse.  Then prescribed cefpodoxime - had no
effect and symptoms worsened significantly.  Finally Levaquin, which
worked dramatically.  A few questions:

I'm curious whether others have had this reaction to Levaquin (which I
took as a good sign that the antibiotic was working) - 6 1/2 hours
after taking the first dose I got the worst pain of my life -
incapacitating pain (could not speak) felt as if my sinuses were being
dissolved. I could also feel the pain in what felt like my optic nerve
(where it had hurt to move my eyes) and strong putrid taste and smell.
This lasted for 2 1/2 hours and the next day the pressure was nearly
gone. I could still taste the putrid taste and smell sporadically that
next day. I've read that Levaquin concentrates greatly in the sinuses,
which helps it work better - could that be it? Also what nerves were
being stimulated? My doctor had not heard of this reaction before.

Fever did not go away until the 10th day of Levaquin (two days ago).
In days preceding it varied 99 to 101.  Right before temp increased
each time I would get pain either in frontal sinus or in the middle of
my back, then waves of heat and it would go up 1.5 or 2 degrees in a
couple of minutes - it felt as if the infection was strengthening or
trying to strengthen.  Anyone know whether this could mean the 10 days
of Levaquin would not be enough?  Also what would cause the pain in my
back?  Do I need to be concerned that the infection is strengthening
overall?  CT scan was negative for chronic infection - no
abnormalities - taken 48 hours after beginning Levaquin (it felt as if
most of the infection was gone at this point).

Today (two days after last Levaquin dose) I experienced dizziness
while sitting.  First instance of that.  Causes? Concerns?  Not
Levaquin as I didn't get it early in the course?  Also had a couple of
instances of sharp pain over my eye, which went away quickly.

Finally, if in fact the Levaquin didn't kill all of the bacteria, how
concerned do I need to be about the speed with which the infection
comes back?  I'm fine with waiting to see what happens but am
concerned that if it's gotten stronger I could develop complications
suddenly?  Unlikely I hope once I've had 10 days of such a strong
antibiotic?

Thanks in advance.