Seem to have locked myself out by changing the site urls in the admin panel from http://blablaexample.com/wordpress to http://blog.blablaexample.com I also have DNS forarding pointing the same /wordpress folder to the blog.- subdomain.
Cannot find any answered forum question identical to my situation. I know I could probably change the database tables back in order to be able to log in again, but that still won't get me a subdomain.
Have tried removing .htaccess, and also putting one in the wp-admin folder. No go. The http://blog.blablaexample.com gets me to the correct location, but only gives me an index of the folders found there.