With an A-fib attack and numbness in my left shoulder and back, what do I have?

Last night my heart went into A-fib. It isn't the first time that it does that, but every other time I went into the hospital for it, my heart goes back into its normal beat and i am sent home. Well last night my heart went into A-fib so I decided to just let it go and maybe by morning it would be gone. When I woke up my left shoulder was numb and tingling and my back was very sore. I have 2 slipped disks in my back, but I don't know if that is relevant.