You're in uncharted waters.

If this happens out in the real world, you might say something like:

やばい  迷子まいごかも  
Uh oh. I think I might be lost.
uh ohlost personmaybe
The word 迷子 literally means lost (迷) child (子). You don't have to be a child to use this word, though.
But in the meantime...