"i took this drug on may 26 following an unprotected incident.  he didn&#039;t ejaculate inside me, but i took it as a precaution 17 hours later because it happened on day 13 of my cycle. eek! i didn&#039;t experience any side effects until a week later, when i received cramping. weird cramps under my left and right pelvic bones that burned. i also had severe anxiety and depression and dropped 13lbs. it was a nightmare. i received my period nearly two weeks later, just 2 days early from my projected start date. it was heavy with heavy clots and lasted a day longer than normal. that being said, my following period in july was 9 days late and i hadn&#039;t had sex since. be warned that the pill can mess up your cycle for a few months after taking it!"