Injured My Arm (thinking Tricep) Yesterday. Pain Is Slowly Increasing,

Injured my arm (thinking tricep) yesterday. Pain is slowly increasing, I bare weight on it and can rotate it in all directions, the pain increases when my arm is used sideways, opening a car door rotating it with the elbow bent. My question is, if I see a doctor is really anything that can be done? I'm thinking I just have to wait for it to heal on it's own? Time. I have been icing is and taking Motrin.