Have small kidney stones - taking Moxifloxacin

I had part of my right toenail removed on 4/6/2010 because of recurrent infections. Had infection at time of surgery. Taking Moxifloxacin /Avelox 400 Mg once a day since 4/6. This AM started having low grade pain (1-2 on scale of 1-10) in right kidney area. Have not experienced any kidney pain for about three years. Can't find answer whether Moxifloxacin might be related to this. Any help will be appreciated. Thanks.