the 4 white pills for yaz

im 17 and i been taking yaz for about one month and i was always afraid of taking the white pills lol i don't know why but i didn't want to i just stop taking the pill and let my normal cycle go on OK now i finally took them and nothing is happening no blood no cramps WHATS GOING ON!! im getting scared thinking im pregnant or something but i have one white pill left to take do you think the blood will come after ive taken all 4 pills?