My account was hacked, password changed, alt email changed, and inbox and folders erased…help!

I went to log in to my account, and my password didn't work.  I used my security question and got in.  My entire account was emptied.  No folders, no emails, nothing except email I'd received in the last 12 hours.  I changed my password, and went to my alternate email address to enter the code they sent.  I noticed the alt email address on file was not mine.  I changed the alt email again,  I go to the alternate email account (which I never use) and I have two emails from the previous night requesting password changes and including the security code, so someone obviously went in and changed everything last night.  I changed the password for this second email account. 

I have a few questions:  First, the alt email on file is not mine - it's obviously the hacker's email.  Can I trace this since it won't show me all of the characters?  Also, is there any way to retrieve all of the deleted content.  I'm very upset as I had a ton of emails I needed to keep.  Could they have forwarded my entire inbox and do they now have all of my personal information????  I'm very worried.  I used this same password for lots of sites (stupid, I know) and they will find them all since I keep track of my purchases in this account.  Please tell me what I need to do.  I also need this other email to be removed from my account since Hotmail says it will keep it for 30 days.