I lost my virginity (I'm 19) on April 3rd, which is what I thought would be the last day of my period, and it wasn't considering I bled on his sheets. He was in me for a very brief period of time and just to be safe, we got an emergency contraceptive pill the next morning, which I took within 6-7 hours after sex. He didn't finish inside me, and he used a condom for the rest, but we wanted to be safe. I was a virgin, so I had never used EC's or birth control before, I had sex again April 4th, and he used a condom the entire time. He is sure it didn't rip, and I bled on his sheets although I didn't bleed from my period that day. I didn't think until now that it may have been due to the EC. I then had sex again April 10th, and he used a condom, but was in me very briefly without one, and he didn't finish that night (he recalls waking up with "blue balls"). He also was never in me for more than a minute at a time because not only am I inexperienced, but I also have a lack of sexual arousal due to my clinical depression, at least according to my therapist. It is now May 10th, and I've taken 3 pregnancy tests last week.My period on average comes the 8th-10. The last one I took was May 8th, it was my first urine as soon as I woke up, and like the other two tests, it was negative. I'm still very scared and will probably buy another pack of tests this week just to be sure, but could this just be the emergency contraceptive?I've heard that it is pretty hostile on your menstrual cycle. Also, I got my period very early last month (April), before I had even had sex or have taken plan b. Also, I began smoking in February and did it more heavily throughout March and April, and I also have been incredibly stressed out about this "scare" on top of finals (I'm a college student) and having moved back home for the summer.