I'm not sure if I may be pregnant or not. I had my period on October 23rd (had unprotected 1 or to a week since. My cycle is usually 24 days so it would be due on the 16th of November. It came on the 9th instead. My period, lighter then usual, ended on Sunday. I am having continuous lower back pain and mild period like cramps, I'm constipated and keep feeling tired no matter how much I sleep. Was this my period or what? Could I be pregnant and should I take a pregnancy test?