All women are different and will react differently to LC during their period. I was irregular-and now much less so. I had bad PMS, and now just a day or two of the crankies. I seldom had cramps, and now they get hideous! Flow is different from month to month-but at least two days of bleeding like a stuck pig. I still get my pre-period pimples on my chin-but my face is clear the rest of the month.