Giantess and Giant Feet

After mysteriously shrinking you are left stranded and no one knows what happened to you

You go to the bathroom at the end of your last class of the day. All of a sudden you feel dizzy and pass out. The next thing you know is the bathroom looks gigantic. You have shrunk mysteriously and no one knows what has happened to you. You must find help before you are crushed or stuck like this forever.