Log-In Try Refreshes to Blank & Blog Looks Strange

I’ve searched alot on this forum & found similar problems, but nothing that answers my question.

My WordPress blog was working fine…

…then yesterday I made some changes, like added the first blog post and changed some settings. Right after I updated my email address (to an email address I just got earlier that day from GoDaddy), it logged me out.

Since then, it won’t let me log in. I’m using the right username & password. I know, because they’re viewable in my Godaddy site manager settings. This problem happens on both Google Chrome & Internet Explorer.

I cleared all saved data on Google Chrome but that didn’t help.

My Godaddy site manager had a WordPress update suggestion, so around about 10 minutes ago I made that update. Godaddy told me that may help my problem.

The SECOND problem is, right around when the log-in stopped working, my blog also started looking wierd. The formatting changed. See for yourself: https://www.moreroomforjoy.com

By the way, I have Thesis theme. & I’ve never added any plug-ins. This is a very new blog & I’ve hardly made any changes to it.

Thank you SO SO SO much for any help!!!!!!!!!