AHHHH! Noooooo.....

For the last week or so I've been working on a few different pictures. One of them was about five minutes from completion but as I was saving the file, my computer or Open Canvas crashed and now my picture is just one giant page of white. I am SO freaking annoyed/frustrated/sad about this! It looked so good. And was so excited to show people. *siiiigh*

But before I start again, if I start again, because I don't know if I have the heart, is there any way to fix the file? Or reverse it a little? I tried saving the event file and playing it back to hopefully stop it somewhere earlier on in the works but it won't play due to some error. I just thought it might be fixable because in the preview window when you open the file, it still shows my picture, just a slightly distorted version, but when fully opened, in OC, it's just blank.

Any suggestions greatly appreciated!