I have bursitis in my shoulder. I'm trying to see if it will heal on its own before I go back and get a steroid injection. Sometimes it makes the muscles in my upper arm ache and today it's hurting enough to be distracting. It's been hurting for about two months now, so I'm thinking it's not going to heal on its own. I'm not exactly looking forward to an injection into my shoulder joint, but maybe it'll be worth it.