Okay, last time we had sex was on the 21st, but the time I believe I may of conceived was the 20th. Somehow the condom came off, and was actually in me. I'm only a teenager, and we are both really nervous. My period is supposed to come on the 29th of August and the beginning of my last period stated on the 29th or the 30th and ended around the 4th or so, and the anticipation is killing us. When am I supposed to take the ept?