So my period is always four days. The second day is always the heaviest. My period just ended a couple days ago but each day was really light. I've been on the same birth control for two or three years now and the only different thing I've done is my boyfriend started pulling out and cumming on me right as he pulls out. (Idk what could be so I'm Judd adding in all the factors if it helps). Should I be worried or take a pregnancy test to make sure?