Me and my partner had unprotected sex on the 6th of this month. The very next morning, about 8 hours after, I took plan B, but we had more sex the following three days, and he ejaculated inside me on all three days. I did not take plan B again. Later on the 12th, he ejaculated inside me again. Today, the 15th, I got my period, but its different in color (dark brown) and its one week early as well. Im not on birth control currently, and we both know fully well what the consequences of our actions could result in. Im just curious, is it possible for me to be pregnant after all of that?