I got a positive OPK on 22 October and i had intercourse 2 day before the Ovulation day now i was suppose to see my menses on 29 but they didn't come,i was having on and off mild cramps,which i know that if i am having cramps that means my menses will be that day or the very next day..I am now 7 days late,I tested myself yesterday and it was negative so now i am confused!!Anyone experienced this before and it ended in Pregnancy?