Can't log into my icloud after IOS8 install. Cant use my phone.

Last night I finished updating the IOS8. I went through the prompts and it reboot installed, however when I went to the "set up" screen I choose English and it asked for my Apple password for the icloud. I have been entering that same password in and it wont take. I tried changing it and it still wont take. I can't use my phone at all because I can get passed the start up screen.