Live or Die

You wake up from a plane crash, You see that your leg is really hurt you cant walk or run you find a piece of cloth in the floor and see that theres a bottle of water and wet the piece of cloth,then you placed the cloth around your hurt leg preventing from your leg to get infected.It was about noon and you decieded to set camp in the plane crash until help came.Then you decieded to sleep it out.You wake up and see a human-like creture coming towards you. You see a piokect knife in the floor and a exit in the wall,Which do you CHOOSE?-