I was on the last day of my period, no bleeding, but he ended up on ejaculating inside me. Within 45 hours, I took Plan B. A week after, I saw something brownish discharging from my vagina, it was a little amount. The next day, there was blood. It was more in amount as compared to the brownish discharge, but than my period. It is the fourth day, I am still bleeding. I am very worried.