My daughter had a bronchitis infection, bordering on pneumonia. ...

My daughter had a bronchitis infection, bordering on pneumonia. She was given Levaquin which after 2 pills (2 days); she experienced extreme pain in her arms , from the wrist to the elbow. She took a total of 3 pills and stopped. This has been 3 to 4 weeks ago. She still has some pain in her arms and has recently experienced bruising on the arms, legs & thighs. They changed her medication but, she continues to cough. Obviously, she was prescribed a less severe anti-biotic. But, I'm concerned about these on going side effects. How long will this continue?