huge problem -cant log in to WP -password retrieval doesnt work

hi..
may anyone help me?.. advice something..
I feel helpless, depressed -as I’m not able to log in to my own website (and i would like to use for work, as i’m unemployed at the moment) run on Word Press, as I forgot password 🙁
I stupidly dont have a backup of my files making website, so I really would like to log in to WP..

the procedure for changing forgotten password doesnt work here. and i’ve been stuck for 2weeks now.. 🙁
when i go to http://…/wp-login -and i click “get new password” and type in my login -email is sent to my email adress with a link.
but that link doesnt work!!!!! 🙁 when I click it i get message: “Please enter your username or email address. You will receive a link to create a new password via email.”
“Sorry, that key does not appear to be valid.”
and the url becomes: http://www.visitingwarsaw.com/wp-login.php?action=lostpassword&error=invalidkey

it is a vicious circle! what can i do -to get new password to be able to log in to my website??

please help.. I would be very very grateful for your guidelines..
Marta from Poland