Hi knotacellar,
I'm sorry to hear about the problem you encountered. Unfortunately, based on your description of what happened, I feel it is unlikely that the data in the listing you were working on when this happened is saved anywhere. If the listing data was saved, you should be able to find it on the Saved Listings page within your account.
If you need any further assistance with your account, please feel free to contact our customer support team by mousing over the "My Account" tab within your account and selecting the "File Support Case" option.
-Mike