u/Legitimate-Froyo-759

Sometimes when I lay on my shoulder weird when I shift out of that position my shoulder feels kinda hard to move, not a full "dead arm" feeling but it's more difficult to move the arm. It also seems to have a limited or weird range of motion, almost like it "pops" at a certain point. It goes away after some time, but I don't know if it mechanically went back into position or if it was a nerve/muscle thing that faded after some time off it. There's no pain, and no sounds, but other than that it seems like it could be a subluxation.