Hi. So here's what happened. I had my period on May 16. On May 21 my boyfriend and I had unprotected sex, but he came outside me. The next day, we had unprotected sex again. Still, he came outside me. As a precaution, I took Nordette the following day, 4 pills at around 6pm and another 4 pills 12 hours after. On May 29, I started what I assume is withdrawal bleeding from the ecp. It was light at first, then got heavier the second day, and then lighter again (there's only a little left now). It felt and looked like my normal period. My concern is that I've read about the possibility of implantation bleeding. And today, I've noticed a dull pain in my lower left side, near the pelvic area. I know that this sort of pain can be experienced during ovulation but the problem is that I haven't been keeping track of the length of my menstrual cycle and I think I'm somewhat irregular, varying a few days or so every month, so I don't know when I ovulate. Based on the info I've given, do you think I could be pregnant?