We had unprotected sex (although my b/f didnt ejaculate inside me) while I was ovulating. In both my last pregnancies I knew within 5 days that I was pregnant as I had the same symptons (back ache, tiredness and lots of peeing) I am due on in 5 days but have been having lots of period style cramps, backache and tender breasts, I kind of really hope I am pregnant although it wasnt planned, does it sound like I could be or just my period on its way!!