Log looks good Carl, get that shoulder checked out. were is the pain, can you locate a specific location on your shoulder or muscle/group.
The pain is in the back of my shoulder, I'm thinking that it is probably my infraspinatus or teres minor since it doesn't bother me to abduct my arm. If it is still hurting during my break I will probably get it checked out by one of my kinesiology fellow friends or a doctor.