No worries dear. Snakes have been known to stay on the lam for months and months. Of course I hope you don't have to wait this long, but don't panic if the snakey stays hidden for an extended time. Heck, one of my friends' boa constrictor escaped and it showed up ACROSS TOWN in someone's front yard (must have hitched a ride in someone's car?) and he was reunited with it thanks to craigslist! Stay positive!