I know that anytime that you take hormone pills it can make your hormones fluntuate and throw menstrual
cycles off. Well, I only have periods
every 2-3 months, so I was due to have a period for this month of October. I thought when I started taking the hormone pill it would throw my cycle off and that I probably wouldn't start my period. Well, three days after my 12 days of taking the hormone pill was up, I started my period which really surprised me.