Am a Virgin but I had an unprotected sex 3days to my period this month but there was no penetration. He just ejaculated on my surface and on the day of my period, I started having cramps and milky discharge which I discovered when I check because of  the feeling that my period is coming but no period. Am 5 days late now and I don't have any of the pregnancy symptoms. Also last month, my period didn't last for the normal full five days. It was just for 3days and around this time I had malaria . Did a home pregnancy test on the 2nd day late of my period and it was negative .  Please could this be pregnancy or just some menstrual disorder or what could be happening to me? . Please I need a quick answer. My cycle for many years have been 30days.help please.