How to get my Dr. to prescribe adult diapers?

I go to the bathroom alot and one night I wet the bed without waking up or knowing about it until 5:30 the next morning and I had to even go to the bathroom. I am getting tired of going to the bathroom and then turn around not even 5 minutes later and go again. How do I talk to my Dr. about this and get him to prescribe depends or other adult diapers for me?