sorry that your q is not answered by none . you have not mentioned your age , how long you are a diabetic how ist controlled , what medicines you take all these matters thats why no one answered your question. did you do any investigations for this, if so tell me the details. pain coming and going means how frequently and how severe its. do you have fever
and motion trouble. so without all this things its difficult to commit. atleast do a urine test routine and a culture . it may be a simple urinary tract infection
or even stone . so if you can tell the details of investigations it will be easy to guide you. but dont worry.