Ok so I had my period on april 9th (first day) and my last day was april 14th... then I had sex on the 18th, but my bf came inside, so I took the plan B and now a week later on April 25th it should be my first day of ovulation but instead I start bleeding like it if my period but is not as strong, is really read but im really scared cause this never happened to me before, I don't know if is part of the Plan B or If im pregnant