I am hearing a dripping only behind the wall of my shower
I am hearing a dripping only behind the wall of my shower. It is not happening only when I flush or run the water, it is happening way too much. It started a couple of weeks ago with only hearing it a little bit, I would go to the spot several times a day and check it, sometimes I would hear it, sometimes I wouldn't. But last night the noise was louder and more severe. I woke up this morning and it is still at the same intensity as last night. THere is no moisture, so that is a good thing, but the noise is really getting to me. DOes anyone know what that could be? Additional info, it is late Oct in Chicago, the weather hasn't been too cold yet, lowest 50's, so I don't know if it has to do with the weather. And if it does, what is going to happen when it gets -2 degrees?