If you 'won the bid' follow the procedures dictated by the auction company.
Unless of course you were simply a pawn in a 'valuation' process.
If you were a represented buyer in the auction, turn your question towards the one you hired.
Hint: A Short Sale IS pre-foreclosure
You may need to wait months/years for the house to re-appear as a bank owned property or foreclosure.
The professional you have representing you will be able to provide your better guidance.