IPod Touch 4G's wifi goes on and off, it wont connect to my wifi when it shows up either?

For the past week or so my iPod touchs wifi randomly disconnects. My bedroom [first location of the problem] has had no trouble connecting up until about a week ago. Now when I try to connect the wifi, it requests a password, which i cant get since our computers broken. Yet the wifi on my Nintendo 3DS [What im using to type this.] hasnt lost connecetipn once. Is there a way to access my password mobiley? Or to fix the wifi on my iPod?