Hi ya kristen00,
Try the caps lock isn't accidently on or off when you try and log in.
If none of these suggestions work, it may be a glitch in the system.
On the top bar here, where it says Forum, Shop, etc.. you will also see “Support” Send them a quick explanation and they will check the system. Also ask them to reset your username and password. They will forward your new password to your email.
This may take a couple of days or so, if you do not hear anything, keep resending your request. Sometimes they do get busy.
On receipt of the email, reset the password to your own. Hopefully you will be able to log into the game again soon.
Good luck and let us know how you get on.