Levaquin and upper arm muscles

On March 20th,I was given samples of lavaquin 750 mgs for a 10 day treatment of a severe bronchial condition. On the fifth day, I developed painful upper arm muscles-felt like I had lifted hundred pound weights and pulled muscles out of their normal places, and could not life my arms above my waist. The next day, I had severe swelling in my left knee and ankle, and could only climb the stairs with grea t difficulty. The pain in t he muscle tissues was incredibly sharp and buring. At the time, I did not associate the reaction to medication, but have since discussed this with my pharmacist who alerted me to this kind of side effect. I am concerned as to how long this severe pain and weakness in the muscles will persist.