Question
I feel like the upper portion of my body has twisted.  my shirts don't fit comfortably and when i lay flat its like one shoulder is higher than the other. My bra constantly stays shifted to one side and I have some middle back pain, it is not excruciating but very uncomfortable. It has been like this  for a while now but continues to get worse.

Answer
I would suggest you see a good chiropractor and have a set of x rays.  If there is anything medically wrong, they should be able to refer you to the proper physician.  I would harbor a guess that you may have a scoliosis of some type, and an x ray will be able to find that quite readily.