Managed to take a shower

Thankfully, I only had a sling to worry about. No cast. My arm still feels sore. I went to an orthopedic doctor, and he told me that there is a tiny fragment that broke when I fell. I may have arthritis in that elbow when I am older. He wants me to use the arm, but as I said it still gets sore. I can move the arm by extending it or bending it, but I still think I need to take it easy. I don't think I can put pressure on it, especially when getting ready to stand or look to support myself with my arm. It feels like a muscle twitch happens and it hurts. I feel as though my arm often gets sore at night from use. Or overuse.