I was showering one morning when I went to move the shower head and...it fell off the wall.
Never fear....I have a good friend who told me that it's essentially a screwed on fixture, to remove, and replace. Go buy one for 20 bucks at the store she said. Well, I did. It worked and I liked it so much I bought a matching one for the other shower.
Upgrading my house one fixture at a time! No plumber required!