I had taken plan b I would say three times this month. After having intercourse almost two weeks ago, I started to bleed. I thought it was because of the sex so I ignored it. Eventually, the next day I was bleeding a lot and so forth until this day. It will be almost 1 week and a half since I have been bleeding. The blood is black and I dong know whether its my period or not. I didn't get any period symptoms and I am very worried!

Please provide an answer!!