I think I killed my blog…

I think it’s version 2.5. It’s the next to the newest one. For the bone-head problem I’m having, that probably doesn’t really matter much anyway. Actually, nothing may matter much. In the past, with the template “theme” I am using, Light Theme I was always able to go to the admin. panel by just clicking “edit” at the top of each post. I had saved my login info in my mac’s memory, so if I needed to log in I could with out typing it in. It’s all gone. Now it doesn’t say “edit” anymore at the top of my post. Instead, it has the categories and my login is no longer saved. I have tried everything. I keep all my passwords and usernames on file in my rolodex. The password and username that I wrote down don’t work. I have tried to go in through every admin. file save in my file manager through my host and all I get is the login screen. I go to the next screen to email me the password and it says the email and the username don’t match. I have tried every combination known to man. Nothing will work. Am I shut out of my blog forever?