If I drink a lot of water, will my UTI go away?

I'm not exactly sure if I have a UTI but I think I might. I looked up the symptoms and so far I have most of them. However I don't really want to call my doctor about this because I'm way too busy to schedule an appointment. Therefore my question for you is, if I drink a lot of water and cranberry juice, is it possible for my UTI to cure itself?