problemas login wordpress

[soniacl]

Hola chicos, acabo de registrarme porque estoy realmente desesperada.
Tenia una cuenta en wordpress con un tema básico, el twenty eleven. Quise personalizarlo y en la hoja de estilos cometí un error, a partir de ahí todo son problemas, no podia entrar en wp-admin de ninguna manera, así que me metí a mi hosting y lo borré todo, hasta la base de datos, me hice una nueva y volvi a subir wordpress desde el principio.
Mi dominio aparece como el tema de twenty eleven sin personalizar, y sigo sin poder entrar al admin.
mi dominio es www.centroopticomelodia/home.es

Ayuda por favor!

los mensajes de error que me salen son:

Warning: Cannot modify header information - headers already sent by (output started at /homepages/40/d374730946/htdocs/optica melodia/home/wp-config.php:1) in /homepages/40/d374730946/htdocs/optica melodia/home/wp-login.php on line 349

Warning: Cannot modify header information - headers already sent by (output started at /homepages/40/d374730946/htdocs/optica melodia/home/wp-config.php:1) in /homepages/40/d374730946/htdocs/optica melodia/home/wp-login.php on line 361

Warning: Cannot modify header information - headers already sent by (output started at /homepages/40/d374730946/htdocs/optica melodia/home/wp-config.php:1) in /homepages/40/d374730946/htdocs/optica melodia/home/wp-includes/pluggable.php on line 669

Warning: Cannot modify header information - headers already sent by (output started at /homepages/40/d374730946/htdocs/optica melodia/home/wp-config.php:1) in /homepages/40/d374730946/htdocs/optica melodia/home/wp-includes/pluggable.php on line 670

Warning: Cannot modify header information - headers already sent by (output started at /homepages/40/d374730946/htdocs/optica melodia/home/wp-config.php:1) in /homepages/40/d374730946/htdocs/optica melodia/home/wp-includes/pluggable.php on line 671

Warning: Cannot modify header information - headers already sent by (output started at /homepages/40/d374730946/htdocs/optica melodia/home/wp-config.php:1) in /homepages/40/d374730946/htdocs/optica melodia/home/wp-includes/pluggable.php on line 866