Changed a setting now I cant login!!

Hi There,
So I feel like a complete n00b!

I was playing around in my settings, in the general screen, it had a couple of different options (cant remember the exact wording), but it was something like WordPress site, and website, and both of them were https://www.nurturinglife.com.au/wordpress anyway, i wanted to publish my site withou the /wordpress but when i hit save it said that it could not be found on server.
If i go to the login page – /wordpress/wp-login.php it gives me the option to log in, but when I put in my username and password it again says cant be found on server.
How do I change the settings back so that I can get into my wp account again?

Sorry if this is really obvious- I am clueless!!!