I had unprotected sex on friday 1/21 and was expected to get my period the following week of the 1/25. I did get what I thought was a period that last up to 8 days but was light ( brown, dark, i think were clots and there was some bleeding but not a lot of bleeding) My last two periods were regular but, I would not consider myself regular but am very stressed about the whole situation! This is the first time i have had sex in a while too.... so as you can see i wondering with the evidence of what i thought could be a period is there anyway i could be pregnant from that night!