What to do if I keep getting Urinary Tract Infections?

I have had three before in the past year or so and I think I have another one again. It's starting to get embarrassing going to the doctors over and over again for the same thing. They had put me on antibiotics the last three times and It's always okay for a month or so and then it will come back. Then after I eat or drink I have bad stomach pains for about an hour afterwards that make it painful to walk and do other things. Does anybody know a way to cure it naturally or something that I could do or just an explanation?