I missed 1 pill on the first week of my birth control pack 10/30/14. I made up for that pill the next day along with the pill that I needed to take for that night, but I was fertile that night. On the night I missed, I had sex with my boyfriend. I've been getting tons of symptoms that have me believe I could be pregnant. It's been 11 days since that day 11/10/14. My period is due in 5 days 11/15/14. Is it possible that I could be pregnant?