Hi, I'm about to go to the doctor tomorrow to get my shoulder checked up. There is a dull discomfort in my shoulder when I move it in a certain way. I still have a full range of motion and can move my arm perfectly fine with a slight discomfort. This has been going on for a couple weeks now. It hasn't got any better nor any worse.

If I happen to go into physical therapy, how long do you think it will take(days,weeks,hours?)

I really want to go back to lifting weights, but don't want to do any damage to this annoying shoulder of mines.