If you're worried about your kidneys then get in touch with your GP surgery or diabetic clinic and get them tested.
It could have a myriad of causes, sometime people, especially ladies develop weaker bladders as they age (no idea how old you are!)
Are you drinking a lot of liquids throughout the day? Is the urine normal in appearance, smell, any burning? Don't immediately assume kidney damage but certainly get it checked out as you're obviously worried.