I am confused on when I got pregnant. My periods have always been every 27 days. I has sex 9/11/10 and I suppose to had my period on 9/27/10 but I came on 9/22/10. I took home pregancy test on 10/26/10 and it was positve. Did not have a period in October. According to my due date I was 1 week preganant October 3rd so when did I get pregnant. Please someone help me figure this out?

