Sorry, I originally skimmed your post for the most part. I guess I missed you seeing your doctor already.
Anyway, I think that any doctor or sports therapist who tells you that some physical therapy/stretching is all it needs isnt very cautious or thorough at all. Not saying your doctor is an idiot, but I think he could have dealt with this much better and IMO much more professionally. I think it would have been better for him to recommend an orthopedist who will be able to take X-rays, MRI's, etc... Go to more than one, also. I had gone to 3.
The first one I didnt like just because of his attitude. The second one took an x-ray and an MRI and nothing clear had shown up. The third one, who i liked the best, took an MR-arthrogram, which is where the tear had shown up because it was relatively small and needed to be dyed. (The dye, is the only difference between an MRI and an MRArthrogram. They inject dye into your shoulder socket, which is a bitch.)
Anyway, I would see a doctor such as an orthopedist where they are actually able to see 'inside' your shoulder and see if anything is torn or anything. Physicians and sports therapists can tell you wether your shoulder is loose or tight, but still not know if anything is torn. This could be a disaster.
Your physician could tell you its ok, then any time in the future it could tear doing anything, damaging much more than what is already done. My labrum has a slight tear in it, not a huge one. Therefore it doesnt give me excruciating pain, or a lack of range of motion. The only bad thing is a lack of stability strength when my shoulder is in a lockout extended position.
My prescription was no severe contact sports (although I do still play pickup football with my friends.)
Sorry for the poor grammar, its late.