Received my withdraw bleed every month since October starting on a Wednesday. Each period starts the same day and lasts around the same length of time. Recently I have noticed a bit of a weight gain and my boobs getting larger. My bf and I have had a condom slid off during sex around 2 months ago, but I have had no change in my withdraw bleed. Same day every month. Could it be possible for me to be pregnant? Im probably just being super paranoid, but I figured I would ask.