Boyfriend came inside me! Could I get pregnant?

Yesterday was my one week "anniversary" of taking my birth control pill (Mononessa). Today I decided not to use a condom during sex since the packaging does say you can start having unprotected sex after a week. I'm still a bit worried. Is there a high risk of pregnancy? I've been taking the pill everyday at 7pm for the past 7 days.
Also just additional info: I was supposed to start my period today but since hormones are outta whack due to BC, there was just some light spotting (I noticed after sex). Does that decrease the risk?