Shoulder couple or part of the transverse stretch

When I was doing my standing meditation today I felt a stretch inside the right part of what I think is the shoulder cavity. When I was putting my attention on that area sometimes it would move and I would notice that there was some kind of random bubbling or pulling sensation that would only happen for a moment on the inner back near the shoulder blade. The type of stretch feeling in the shoulder cavity feels like the kind of push pull feeling in the feet or in the pelvic like the transverse stretch. Is there some kind of coupled power in the shoulder cavity or is this just a part of the transverse stretch that I'm just now noticing or is this just some sensation that I am noticing now but will pass as time goes on.