I woke up at about 3 AM and my entire left arm, from shoulder to fingertips, was numb. So numb I couldn't feel it at all- I couldn't even move it! It took about 5 minutes of moving it around (using my other hand) before I could move my fingers on their own. Is it possible that one morning I'll wake up and it'll be beyond saving? Could I have to have my arm amputated just because I slept on it funny? I must know.