I normally have a pretty regular cycle and start the 4th week of each month. This month, my period was late. I was not worried at this time because I hadn't had sex for about 3 months. I woke up on the 5th of March and had some light brownish discharge, and assumed that my period was about to start. My boyfriend and I had unprotected sex that night, using the pull out method. It is now the 9th and I have yet to start my period, although the brownish spotting began again about 2 days after intercourse. I cannot tell if this is merely a very light irregular period, or if I should be worried, because even though getting pregnant by pre *** is rare I know it does occur. How soon can I take a pregnancy test, since technically I had already missed my period before? I am pretty confused and can't seem to find a source with any certain answers. Any ideas or advice would be helpful. Thank you.