SteelFist: I'm not trying to be obstructionist, but digging through the mattress isn't one of the options.
Ertxiem: You examine the portal back to your bedroom more closely. You can just make out the outlines of your bed through the mostly opaque layer of portal disguised as wall, and the slight shimmer of the quantum tunneling. You reach a hand through the portal, just to be sure of your escape route, and find that you may still easily traverse the portal.
(It is at this point that I'd like to bring up one thing -- you can die in this game. You'll be restarted to one page previously, or if not appropriate, right before the fatal decision.
(Combat is optional, and can be skipped to get to the end result, or actively engaged in by popular vote. Active combat takes longer, but you get to participate in the fight, and decide the exact strategy followed, not to mention that you generally have better odds at winning. Still, if it's a pushover fight, like a knight attacking a peon goblin, you can skip it and be fine)