I had unprotected sex 10 DAYS ago. I took ipill within an hour after sex. However, 2 days after, I started having black blood stains. And from the 4th day till today (7th day), I started to bleed with the flow is similar to the 3rd day of my usual period time. Could you kindly advice what does this mean and should i do anything ? And i believe it can't be possible for pregnancy . Kindly advice me. Thank you.