Yes I frequently have toilet dreams. My phobia is about poo, not pee, but my toilet dreams are always about pee, not poo. They happen before I wake up if I need a pee. The dream is always that I badly need a pee and there is a toilet but there is a reason I can't use it. The dreams are always different and I'm amazed at the many different variants that my brain can think up on this topic. Sometimes I even dream that I have actually peed. Fortunately as an adult I have never peed in my sleep, but I do worry that it could happen.

Once as a child I woke up to find the bed wet, and thought I'd peed in the bed. I then thought that as already I'd done so I might as well carry on and finish the job and I peed a bit more. I then discovered that I hadn't wet the bed in the first place - my hot water bottle had burst and made the bed wet. My mother didn't make a fuss about it, fortunately.