Continual pains in joints after taking antibiotic

This summer in July while I was on vacation in Miami Beach, I was given a 10-day course of antibiotics because I had started urinating blood and they found some ecoli in the urine culture.
About a week after finishing the 10-day course of antibiotics, I had a second episode of urinating blood and was given a second course of the same antibiotic.
I left for the UK soon after that and finished the course, but after about two days of starting to take the second course, I began having pain in my elbows and knees.

I read the antibiotic leaflet and it mentioned that pain of tendons was a possible side effect, but I finished taking the course.
Since then, I have continued to have continual pain in my joints, especially the right elbow and the left knee.

I have since gone to see the doctors here in England and they are aware of the medicines that I took and the symptoms I describe, and they are doing some blood tests to see if there may be some rheumatic causes to the pain.
It's been two months now since I took the antibiotic and the pain is as severe as it has ever been.
The antibiotic is called ciprofloxaci 500mg tabs.

Can anyone please give me any advice on whether this is a typical situation, how long it may last, and whether there is anything that I can do about it now?
I don't want to compound the problem by trying anything that may make it worse such as exercise, physical therapy or taking other medications.
Is it possible that there is permanent damage to the tendons, and if so, what would be the medical solution, if any?