How bad is a rotator cuff tear?

I am a pitcher. I hurt my shoulder about a month ago and I went to a shoulder specialist. He said he thought he was just swelling in my shoulder and he put me through physical therapy. Yesterday my physical therapist told me she thinks there might be a tear in it. I can move my arm and some movements hurt and other don't. Does anyone know how much of a pain level a torn shoulder is on a 1-10 scale and how much movement is limited?