Jenne,
My DD (3,000 miles from home) had the same experience. The doc said, no, it's not the Levaquin, Levaquin doesn't do that, you've got MS (!). Talk about freaked out. DD was, half-blind & barely able to move from this drug, no emotional support system to speak of (3rd week of freshman yr. of college). The doc had absolutely no labs, no objective evidence to say MS, totally dismissed the possibility of adverse drug reaction despite documented history of ADRs. Waaay beyond poor bedside manner ... I vote for mental cruelty.
There are support groups & class-action lawsuit groups with many, many personal stories about how Levaquin has ruined lives. Different info than what your doc gave you. I suspect that docs who say these things about Levaquin have been totally indoctrinated by drug reps. It's like a cult.
I advised my DD to dump the doc & find a responsive healthcare provider. I would never give repeat business to any doc who insisted that there was only one possible remedy for something as common as sinusitis. Gosh, how did humanity survive before Levaquin was invented. Double ditto, never return to a doc who denies the validity of my symptoms. Such hubris! I would probably even give these docs a thumbs-down on one of those physician-rating sites.
Not everyone has a bad experience with Levaquin. In our family, we are known to have ADRs & have this noted on all medical charts. It's a genetic/metabolic thing. People who metabolize certain drugs faster or slower than normal get more side effects. Hopefully soon we'll be able to do the genetic screening for certain drug metabolic pathways. It's available in some but not all parts of the country.
Jenne, did you lick your sinusitis? I think there was a good thread not too long ago on the allergy forum here.
Best wishes.