Hi. My last period ended around october 17th. I had unprotected sex but he did not ejaculate inside of me. I was scared so i took the plan b one step pill about 28 hours after. Now almost a week later i am bleeding / discharging dark brown blood/ chunks. It is light but its been discharging/bleeding for more than a day now. What does this mean? And is it unlikely that im pregnant? especially because im bleeding