Has anyone ever missed a period for another reason other then being pregnant? I was supposed to get it last Friday, but still haven't got it (5 days late) I took a pregnancy test on Monday (I had sex with a guy on the 24th , but we used a condom!) but the test came out negative! My boobs have been quite sore over the last couple of days, but still nothing! I'm usually on time for my period, so this is quite odd. Anyone else been through this for any other reason other then pregnancy..?