Avelox and workout

Hello, I was prescribed Avelox 400 mg by my doctor. I am a healthy male, 34 yrs old, athletic, work out regularly and in lean condition. I had a sinus infection, started using Avelox and on the second day, after a light tricep workout experience wicked pain/ultra rapid swelling in my left elbow approx. 30 mins after exercising. I could barely move the limb and the swelling went down after packing it with ice. I called TeleHealth and they told me not to stop taking it and see a doctor. I went to a walk in clinic, showed the injury to the doctor on shift and he told me I must of over exerted myself during exercising. I was told to continue taking Avelox. I decided it was in my best interest to stop any weight lifting exercises. I decided to do a light cardio workout on the fifth day, 20 minutes at a lower speed than usual ( 2.8 ) and after completing the work out experienced some stiffness in my left knee. Approx. 30 mins later, I experienced the same wicked pain/ultra rapid swelling in my knee. I could not walk and had to crawl to a phone to call for assistance. This was approx. one month ago, now I have pain in both elbows, knees, right shoulder, both forearms close to the elbows, and tennis elbow in the left forearm. I have not exercised since then and my doctor told me to discontinue the med. His advice was to take anti inflammatories and rest. The left knee and elbow swell when I walk or just hold the phone to my ear for an extended period of time. I would like to know what you found during R&D of this med. and how long I am expected to be like this. This is now affecting my social life and restricting me from doing what I enjoy in life and affecting my performance at work.