Nigeria, Aug. 31 -- Every month, Bolanle Oyebamji was tormented by her menstrual cycle-waves of pain from her lower back, down her legs, and through a swollen, throbbing pelvis.

For the recent graduate of Ekiti State University, periods were more than a biological occurrence; they were a disruptive force that derails daily life.

That was until a friend suggested she try Postpill, a contraceptive pill, not for its primary purpose of preventing pregnancy, but for her debilitating cramps.

The outcome was unexpected. Her period became irregular, with a seven-day break before returning with heavier force. Fortunately, the heavy flow came with no menstrual cramps.

"After that, I didn't see my period for two months, and that got me worried. ...