OK I've recently started menstruating the beginning of the year. Cycles and everything was regular. Now its day 24 of "the cycle" again and I have pain in my left abdomen and it is spreading to my back . Usually my menstrual pain occurs during the period and not just on the left but right too. I'm not even menstruating right now but I should in four days. What does this mean by the way my body is trying to settle into a normal cycle because I've only menstruated twice before.