Testttttt

Venise
I took a test lastnight and i think i saw faint line very very faint. The i took one today and it was bfn . Im confused becuase i read diluted pee can give a neg test and all i ever eat is ice constantly. But im hoping sunday morning i get two lines becuase ill be 10dpo. But doea diluted pee really give a neg test ? Help.