Basically I had unprotected sex a week before my expected period. I am now 6 days late with clear extra discharge, but still no period in sight. I was just wondering I know some women ovulate late and there is always a chance of pregnancy without any form of birth control. Although we did start off with a condom and half way it got taken off. And if it can cause me to miss my period when should I take a pregnancy test and it be accurate?