Questions about the contraceptive pill?

I am on the contraceptive pill and i had last nite, im spose to start taking the sugar pills now and i dont no if i am spose to skip them and keep going on the white pills or take the sugar pill as i dont wnat any chance that i could get pregnant. or does it not matter? also when on the pill is it okay if you dont tkae it at the exact time every day, or will this it unsafe to have ? i would really love answers.