Holistic Remedies for a Frozen Shoulder

I have pain in my upper arm. If I raise my arm straight out to the side, I hear crunching in the shoulder joint and have pain-not so much in the joint but definitely in the upper arm. If I raise it to the front there is no pain. I have iced it and soaked in epsom salts bath now for several weeks. Is there anything else I can do? At what point do I go to the dr? I can recall no injury to it, but I do tend to outside chores and who really knows? dr google indicates rotator cuff :( but I don't want that to be it.