Birth control

Okay so this is my first month of taking birth control. I'm taking Orsythia. On the package it says it's effective after 7 Days. I had unprotected sex on the 9th day. But only for 5-10 seconds because we changed our minds. Then we continued to have unprotected sex. He never finished inside me and i have always taken my pill on time except for one time when it took it an hour late. But that was the only time. I am now on my 5th placebo pill. Is this normal to not get your period yet? I was supposed to get my period yesterday but so far i haven't gotten it. PLEASE HELP!