Admin page "Not Found"

I’m not sure how this happened, as everything was running smoothly for days, but now when I try to log in or go to the url for the admin page wordpress gives me the “Not Found: We respect your curiosity! But, what you are looking for is not present here. Don’t be disappointed, keep the spirits high, keep learning, keep finding! Curiosity is good, first step towards innovation.”
Well I’m definitely not going to innovate anything if I can’t log into wordpress and tweak my site. Please help.