how do you save? (Far Cry: Primal)

Tell me who was playing. I go out early in the game after treatment savage from the cave take out my bow to shoot the arrow. 7 of the 8 remains. press F5 and restart the game. arrows as it should be 7, but I was in the cave.although there are abroad. it should be or it's a bug? after a quick conservation implies the preservation in the place where you pressed F5.