Personally I think doing something drastic as switching is a big mistake. Most of our gender identification comes from the workings of psyche itself. Not totally, but a large portion of it. Try some kind of therapy that puts you into a mindset of a gender you wish to be. I cannot even recall how this happened to me, just with time I guess, and training to create mental stuff and other symbolic things that make me feel possessed rather then locked in material body. This also has its dangers but better then any alternative.