Shoulder Injury?

[Temple90]

Wanted to get some advice from you guys regarding a shoulder injury. Approximately 3 months ago I was having a lot of pain around my right scapula. I went to the chiro and found out it was an imbalance and issue with teres minor. After rotator cuff exercises, stretching and foam rolling the area it was getting much better.
Three weeks ago I went tubing and got my hand caught in the tube. I felt pain in my shoulder and have been feeling it ever since. The pain feels like it is in the area where my chest meets my shoulder and It is most notable on flat presses and pull ups.
I went to my PT buddy who mentioned it is most likely a strained teres major and healing time would be 4-6 weeks. Anyone else have anything similar happen? Wanted to get some opinions and maybe treatment advice. I am on week 3 and plan on going to the doctors if I do not see any improvements within a week or so.

Thanks,