In any case my own and many shared experiences on this forum it's takes 2 hrs +/- to pass the SWF so make sure you stay near a bathroom and if you don't start passing significant amount of fluids an hr later drink a qt of water just to make sure that any retained salt get diluted or flushed out.
Major caveat after the SWF. It you think it's gas...............It ain't....................;+D