No longer can login and my theme is not displaying

I had blog.shakemyday.com” and decided that I didnt want the url to be that way.

I deleated the “blog.shakemyday.com” in the admin panel.
things seemed to work. and had it point to “shakemyday.com/blog/”

then I wanted to have the index file in my the root directory. opened the file- changed it so that the header pointed correctly. and uploaded it to the root directory. It worked.

then I realized that if I had that index.php in the main root then I can not have a different home page. So I tried moving it back into the blog folder.

I never saw the .htaccess file.

My site is not showing my theme.
I now am not able to log into my admin. and it has no styling.
and it is not recognizing my password. I had new password sent- but I still receive this message:

ERROR: WordPress requires Cookies but your browser does not support them or they are blocked.

I went into the wp-config.php and put the password back to my orginal password and checked to make sure that the <?php code was correct

I tried downloading the most recent version of the word press and I upgraded. I made sure not to overwrite the files they say not to overwrite. =no change.

Please help.