My last period was on January 25th 2013, my period ended thursday January 31st, and on Friday (the first) I had unprotected sex although he didnt finish inside im aware of precum, exactly a week after having sex I had a sort of brown discharge when I wiped but it only lasted for about 3 days, then a week later I had a clear white discharge in a big quantity. I had heard that there were very little chances of pregnancy the day after your period, but my period was due yesterday and nothing. Im very very worried, should I be scared? I thought that the brown discharge could be implantation bleeding , but isnt that supposed to happen when your period is due? Wouldnt it have been too soon back then? Im really scared, please help me