Hi Docs! I Haven't Had Sex For Almost 8mos. Same

Hi docs! I haven't had sex for almost 8mos. Same time i stopped taking my contraceptive pills.after that i have regular 30days cycle. My period usualy starts from 23rd to 27th of the month. My LMp was july 23.i had sex last july 21 with withrawal method and july 25 at 3pm,where he come inside me bec. We assumed theres a little blood coming out. I took 4 nordette on july 27 430pm. Another 4 after 12hrs. today is july28. i still have no period which is usually happens during these dates. I'm paranoid. Was nordette took effect as ecp? Or will i be get pregnant? Please be specific with ur answer pls.thank u