I consistently have my periods on the 26th of every month, but in october, it occurred on the 22nd. Considering my upcoming wedding and honeymoon in january, scheduled around the same date, i'm anxious about the timing. To potentially shift my menstrual cycle by 10 days and have my period on december 12th, I am considering using regestrone 5 mg twice a day from december 2nd to december 6th. I would appreciate guidance on this matter as I am genuinely concerned.