I have been having pain in m yleft shoulder and biceps(mainly) and sometimes my elbow is a little tender. This has been going on for 8 or 9 weeks,. I went to my doctors and he is having me go to physical therapy. I have gone 6 times now and still very sore. Cannot move arm in a backward motion or if I do any sudden moves it hurts very very much. My therapist and I have noticed also there is a slight lump in my bicep and she told me it could be a cist and to keep an eye on it but it is not the cause of the pain I am having she said. What could this small lump mean? I am right handed by the way.