Sorry it has takin me a while to post back. To answer some of the questions I don't go all of the way down on the pull ups, I leave a slight bend in my elbows.
I am not fat, although I'm not ripped either. I will post a picture of my back if any can explain to me how to post a pic from my phone.
The reason I'm asking is because I have never had this pain before. It seems to have been triggered by my weight gain. That's the reason for the bodyweight question.
I checked on the broomstick stretch and will add it to my stretching routine.
I used the pull up assister at The gym the other day and was able to do overhand pull ups with out pain at a lower weight.
I am starting to believe it is an imbalance or a flexibility issue.