The fork has been very heavily stressed. The reality is it is probably OK. But, do you want to place your personal well being in the hands of "probably". If it were me, I'd keep riding the bike, stop by the LBS to prompt them I'd be looking for quick turn around (and/or order the fork if required) and come payday I'd replace it. If your fork is threadless, replacing it is a snap. You'll need your LBS though to cut the steerer tube down to the proper length unless you have a pipe cutter then you can measure and do that yourself, too.