I made a huge noob mistake with my Macbook. I used Disk Inventory X to see why my drive was so full and it showed all my files under my user account as well as a huge amount of data in /Users/.myuseraccount called the sparsebundle. I had FileVault on but not Time Machine. I thought I might have used Time Machine to create an image of when I first got the computer, but I'm not sure if I did or not. It looked to me as if the data was completely separate files, but when I deleted the sparsebundle files, I could no longer log back into my account and now it shows my /Users/myuseraccount directory to be empty.
PLEASE somebody tell me I didn't just lose everything. Only a small amount of these files were backed up elsewhere. I cannot afford to lose all this. Is there disk recovery software that can restore this? Or could I possible take it back to the Apple store?