I had a sinus infection and the doctor gave me azithromycin 250mg...

I had a sinus infection and the doctor gave me azithromycin 250mg in what is referred to as a Z-pack, unfortunately that didn't do the job so he gave me Levaquin 500mg 1tablet a day for seven days. I had many of the side effects, a headache everyday I was taking it, nausea, dizziness, dry mouth, etc. Drank a ton of water as it said to do. On the second day after I was finished with the pills I started having pretty bad knee pain, then swollen knees and ankles. I mean really swollen. And I too have many stairs and it is very painful to get around, can't bend my knees too much with all the swelling. Am still drinking the water and hoping to flush this out of my system as fast as possible. It did get rid of my sinus infection, but I'm not sure it was worth all this...