Irregular menstruation, delayed menstruation and delayed ovulation

If menstruation is delayed, ovulation period will also be delayed, for some women with irregular menstruation, it is difficult to accurately determine the ovulation period, under normal circumstances, about 14-16 days before the next menstrual cramps is ovulation day, the first five days and four days after this day add up to ovulation period, if necessary, you can use ovulation test paper detection.