I am on my 3rd week of pills and missed my 3rd pill for this week on Tuesday. I accidentally dropped the pill and couldn't find it. Had sex Wednesday morning but still took my regularly scheduled pill for that day. Is there a chance i could have conceived? Im very irregular on my period and won't start for months that's the reason i take these pills(Tri-Nessa). This is also my 1st month taking them so thats why I'm wondering if im at a high risk of being pregnant.