Hi, me and my boyfriend both lost our virginities about three weeks ago and have had sex several times since then also. We used a condom everytime and im pretty sure we were safe. But I am not on the pill or any kind of birth control. However, my period should have came on the 4th of August yet on the 3rd all i got was a really light period which was brown, this carried on for the second day then comeleltey stopped on the third day. I dont know what this could mean yet I read that it could be implantation bleeding. I am used to brown/a light period for the first day yet not for the second day and its completely unual for it to stop? Please help and give advice