im a very alarming 22 days late on my period. it was due feb 11 but never showed up! im still young enough to have fairly irregular periods but mine have always been fairly on time. i have also been having mild, dull cramp like pains in my back and lower abdomen. nausea and every time i think these are period symptoms and my period has finally arrived i only find a heavy white discharge. i have not been sexually active (to my knowledge) in 6 months. i say to my knowledge because in early February i went to a party and got incredibly drunk. i stayed with 2 guy friends so i would not have to drive drunk and found out some stuff happened but no one said anything about sex. uh help?