why are you so worried about "water intoxication"? again based on your very brief posting i don't think the water in the three pizzas that you ate and that cup of mango juice would push you over the water intoxication edge.
answer needed asap. basically i ate 3 pizzas and a pasta with a meat and drank a cup of mango juice. i have been thinking that since i get some water from food is it possible i might have gotten water intoxicated? thank you very much