I'm a 47 yr old male who has constant sinus problems and recently...

I'm a 47 yr old male who has constant sinus problems and recently( 2 weeks ago)had a bad sinus infection. I exercise regularly and am in pretty good shape(or so I would like to think). I have never had a bad allergic reaction that I can remember to anything. I was given a 10 day supply of Avelox to clear it up as I was supposed to go in for a sinus operation tomorrow. While I was on the Avelox last time, I don't remember experiencing any significant problems and I wasn't the best patient. I doubled up on doses in the beginning figuring it would work faster, took it on a empty stomach, drank a few beers over the weekend, etc. I went off of it a week ago and then this week I started to feel some cold symptoms coming on. Then yesterday at my pre-op visit my ENT gave me 2 pills (1 per day) to take prior to the surgery to "be on the safe side". I took one at 5 PM last night on an empty stomach and headed off to martial arts class. By the time I got there 20 minutes later I was feeling funny. I tried to work out but I felt lightheaded and had severe stomach pains. Then I had a hard time catching my breath under the slightest exertion. I normally jog 2-3 miles a couple of times a week with no problems so I was concerned. I left class and barely made it home. The only reason I didn't have a full blown anxiety attack was because I have suffered with them for years and recently feel I have been able to control them better. When I got home I was beet red from head to toe and my wife wanted me to go to the ER. I realized that it was a reaction to the Avelox and basically rode it out but it took about 3-4 hrs before I felt better again. I'm still not right today and I canceled my surgery for tomorrow. Now the ENT doctor wants to put me on something else before the surgery and I'm wondering if that's going to cause any problems.