Hi i am Dr Ahmed Aly thanks for using healthcaremagic site , I had gone through your question and understand your concerns .. Actually rarely levaquin can cause tendinitis and pain in knees and hips but that is very rare and happens only on chronic using or long duration of administration . In my opinion some times severe lung infection causes bone aches that may subside simultaneously with bed rest and relaxation . For now you may use advil tab when needed , hot massages with topical gels , B12 vitamin supplementation , muscle relaxants , spinal straightening exercises , physiotherapy will be effective for most of cases . If pain persists i recommend a visit to your physician and MRI to exclude any spinal injuries or disc herniation for proper evaluation and management . Please click and consider a 5 star rating with some positive feedback if the information was helpful. Wish you good health, Any further clarifications feel free to ask.