If the menstrual cycle is regular, to 28 days menstrual cycle, for example, the ovulation period for April 20 to April 29, if the menstrual cycle is not regular, the ovulation period is relatively not fixed, need to rely on body temperature monitoring or ovulation monitoring to determine.
1. Regular menstruation: the menstrual cycle is generally divided into the menstrual period, ovulation, the safe period, the day of ovulation for women is about 14 days before the next menstrual period, due to the egg and sperm discharged after a certain survival time, so before and after the day of ovulation are possible fertilization, so the general will be 5 days before and 4 days after the day of ovulation is collectively referred to as the period of ovulation, belong to the period of easy to conceive.
2. irregular menstruation: irregular menstruation menstrual cycle time is not certain, the day of ovulation is also difficult to determine through the calculation, you can monitor the basal body temperature, ovulation test paper and ultrasound to monitor ovulation and other ways to determine the time of ovulation.
Ovulation projection method is relatively inaccurate, you can also use ovulation test paper, ultrasound monitoring ovulation to improve the accuracy if necessary.