Birth control as contraceptive?

Hello, I have recently stopped taking my birth control because I felt that I may have been taking it incorrectly. I stopped when my active pills were done and had my menstrual that ended this Saturday or Sunday. This morning I had unprotected sex with my boyfriend when I remembered I was not on birth control any longer. We stopped and he did not ejaculate, but I am wondering if his pre-*** could impregnate me? Also, I took my roommate's birth control at 7AM right after intercourse and again at 7PM, the brand is Gildess FE 1/20. I was thinking it would work the same as an emergency contraceptive, am I wrong? -Danielle