Johanna, I experience that occassionally as well. I'll be dreaming about things with no sexual content and also wake up as if I have just been physically stimulated in my lower area. I don't know what to say. I'm obsessive-compulsive about using the bathroom before bed so I can't say that's it...<for me> anyway. But, like niteterrors states, it's not so bad to wake up to...especially if you have someone next to you to wake up and fulfill the feeling!