Bluehost restored my site to a week ago before the problem existed, which started on the 18th.
I tried doing all kinds of troubleshooting on my own, including deleting all of my plugins. But the error came in being corrupt data in my code with permissions.
As for another way to log in, I logged in, got the error message, so went to the frontend site and clicked the edit button on a page and got in that way.