What Causes Severe Shoulder Pain After Taking Levaquin?

It has been 2.5 months since I finished taking Levaquin. Was hospitalized for sepsis from severe pyelonephritis for 8 days the last week of November 2015. Not sure what IV antibiotics received. About 1-2 weeks after finishing the Levaquin I began having severe pain in my shoulders very similar to the pain associated with a torn rotator cuff that was repaired 5 yrs. ago. Obviously, I had not read any information about side effects, when to call MD, etc.. I have Multiple Sclerosis, CHF, long term Coumadin therapy for pulmonary emboli, hypertension, hypothyroidism, depression, other conditions are associated with my MS. What I would like to know is, can my shoulders be fixed? Will the increased fatigue go away and when? Will the weakness in my legs get any better and when?