Usually implantation bleeding occurs during the time of your period ...

Yes; no; and around the time of your period

Thanks for the reply guys... I think maybe i'm just paranoid though. I had unprotected sex a week and a half ago (i know its way too soon to tell anything) but usually he pulls out, this time he didnt, so of course i'm thinking the worst. And the only reason I thought of implantation bleeding is because 2 days ago we had sex again (this time protected) and I noticed afterward that I was bleeding a little bit, (my period isn't due for another 4 days) but I think it might have been because of too rough of sex, although we didnt do anything different then we had before and this has never happened pervious times. Any thoughts?