Okay, so my boyfriend and I have been sexually active for the past 4 months. I have been on and off birth control. We have done it without a condom a couple of times, and I have never fallen pregnant. However, on the last night of my period (the verrrry end of it.. this being 2 weeks ago) we had sex 3 times without a condom. We both urinated in between and he pulled out WAY before he came. Realizing this now, it was completely dumb and foolish of us. However, what are the chances of me becoming pregnant? I was not ovulating, and my boyfriend barely pre-ejaculates (I have never seen it, ever.. and we're really active). I am due for my period sometime at the end of next week or the following, and I am worrying. Should I even be worried considering it was the during last day of my period and given the circumstances?