I started with a frozen shoulder just over 12 months ago, the movement was bad, and the pain was hindering sleep, i went for x rays and they diagnosed calcification, I was sent for physio, but it did'nt really seem to be working, then in October I woke up one morning with a severe pain which I hadn't had before, as the day progressed it got worse, and by the night I was going out of my mind, I have never known anything that bad (not even childbirth) even breathing hurt, I went to the docs the next day, but wouldn't even let him touch it, he said it had developed into tendonitis, which is usually treated with a cortosone injection, but because I have a clotting disorder I can't have intra muscular injections, so he would refer me to the hospital. My appointment came through for January!!!! I rang and said I may as well cancel this because if the pain continues at this level i won't be here, I will either have done away with myself, or through lack of sleep and pain , killed someone and be in prison lol.
The up shot is, I never got to see anyone at the hospital, over the next 6 months or so it very gradually got less painful. I still don't have full movement, but it is coming back (fingers crossed) I suppose because it's in my right shoulder, and i'm right handed, i'm doing my own physio anyway.
I know how horrid it is, but I promise, with or without treatment it WILL get better, just takes an awful long time. good luck xx