Help! Changed URL for some reason – cant acces wpadmin

Hi,

While trying to unpublish my website during a transform of it, I couldnt find any options for it. I went into general settings and changed both url-labels to http://www.tasvia.se/bolaa, instead of http://www.tasvia.se, because I thought that would just make people not able to see the site (dont know why i thought that).

Now, the wpadmin redirects to /bolaa, which is obviously empty. And i cant get in to revert the change i made. Plese help!