I have obviously lost my mind.
I set up my wordpress and finally finished it, so being the fool I am changed my WP admin settings Site URL to point at my domain name.
I currently had a website up and running on the URL, but the program I was using was rubbish and wouldn't let me do any online editing so I thought WordPress was a better way to go.
I tried following the instructions about updating index.php and htaccess but that just fried everything. So I put them back to the way they were before I changed anything and now my old website doesn't work and I can't access my admin dashboard on WP.
Is there any way I can do something clever and fix it all? It took me so long to get the WP site exactly how I wanted it and now it's all gone :(
I tried going back in my browser to the settings page but I just kept getting a 404 message.
Please clever people, can you help me?