About a week ago, I got what felt like a sunburn and the feeling you get of the dried skin when you move on my upper back on the right, then a pain, has grown below the armpit and around the breast, my back feels like it is burning, and now welts are on my back, my daughter says they are like groupings of medium bumps, I am diebetic, insulin dependent and a six year breast cancer survivor on the other side. Any advice?