My sympathies to shorters who might now be scared out, though nobody knows for sure what Monday will bring. But in future, remember the rule chaps, 'Plan the trade, trade the plan' so if you don't have a plan you shouldn't put on the trade.
That said, if you're a swing trader, you might have gone short on the Dow on Thursday as it breached the low of swing high 08/12, 8637. The textbook stop-loss from here was the high 9027, 390pts higher, and this clearly has not been triggered yet. If you trailed this stop lower as the price fell on Friday, your stop would now be 8347+390=8737. We are still 108pts below the trailing stop level, so you still may wish to hold on to the bitter end and see the stop trigger before you exit, on the assumption that you are still just as prepared to accept a 390pt loss as you were when the trade was entered. On the other hand, if you're going to hit a brick wall in your car you would probably try to brake, so you could start to cut the position down right now to reduce the damage rather than close completely before your stop is hit.
If none of the above means anything, for example you don't see why you should have a stop or why you would trail it, you probably shouldn't be swing trading, in which case get out now and find out what to do before you try again. Remember, its 'Ready, Aim, Fire', not 'Ready, Fire, Aim'.