Granted.
Your situation is so dire and unique that not a single surgeon will dare to touch it for fear of a malpractice suit that's sure to follow. But then you discover a witchdoctor who lives at the delta of the mississippi who cures you without surgery. However, the cost for each of his cures is to be ridden with one of his plentiful curses. You're a cute girl though, so he selects a more pleasant curse: now you have 6 long cat-like whiskers growing from your cheeks. And your shoulder is now more flexible, stronger, and more beautiful than ever!
I wish we could change not just our gender, but our species as well.