please read

So I'm on day 3 of my pill free week and by now I usually start my period.... But I haven't. Last month I took my pill back to back and slipped my pill free week as it was over new year and Christmas... I usually take r at 11:30am however I didn't start my new pill pack (the one I took to stop having a period) I starter that at 13:30pm..... Should I be worried??????? All pills were took correct and on time and no pills were missed. I'm on the pill that replaced microgynon, it's in s pink and white packet.... I have w 12 hour window to also take any pill that i miss. Please help !!!!!